<HTML>
<HEAD>
<TITLE>sv8</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center" style="font-size: 10pt; margin-top: 12pt">As filed with the Securities and Exchange Commission on June&nbsp;20, 2008.</DIV>

<DIV align="right" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Registration No.&nbsp;333 -
</DIV>

<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt; margin-top: 6pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>






<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>WASHINGTON, D.C. 20549</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM S-8</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>REGISTRATION STATEMENT<BR>
UNDER<BR>
THE SECURITIES ACT OF 1933</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>WILLBROS GROUP, INC.</B>
</DIV>

<DIV align="center" style="font-size: 10pt">(Exact name of registrant as specified in its charter)</DIV>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top"><B>Republic of Panama</B><BR>
(State or other jurisdiction of <BR>
incorporation or organization)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>98-0160660</B><BR>
(I.R.S. Employer<BR>
Identification No.)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Plaza 2000 Building<BR>
50th Street, 8th Floor<BR>
P.O. Box 0816-01098<BR>
Panama, Republic of Panama</B><BR>
(Address, including zip code, of registrant&#146;s principal executive offices)
<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Willbros Group, Inc. 1996 Stock Plan</B><BR>
(Full title of the plan)</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Robert R. Harl<BR>
President and Chief Executive Officer<BR>
Willbros Group, Inc.<BR>
c/o Willbros USA, Inc.<BR>
4400 Post Oak Parkway, Suite&nbsp;1000<BR>
Houston, TX 77027<BR>
(713)&nbsp;403-8000</B><BR>
(Name, address, including zip code, and telephone number, including area code, of agent for service)</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV><BR>
<B>Copy To:</B></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 6pt"><B>Robert J. Melgaard, Esq.<BR>
Conner &#038; Winters, LLP<BR>
4000 One Williams Center<BR>
Tulsa, Oklahoma 74172<BR>
(918)&nbsp;586-5711<BR>
(918)&nbsp;586-8548 (Facsimile)</B></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, or a smaller reporting company. See the definitions of &#147;large accelerated
filer,&#148; &#147;accelerated filer&#148; and &#147;smaller reporting company&#148; in Rule&nbsp;12b-2 of the Exchange Act.
(Check one):
</DIV>


<TABLE width="100%" style="font-size: 10pt; margin-top: 0pt"><TR><TD>Large accelerated filer&nbsp;<FONT face="Wingdings">&#254;</FONT></TD><TD align="center">Accelerated filer&nbsp;<FONT face="Wingdings">&#111;</FONT>&nbsp;</TD><TD align="center">Non-accelerated filer&nbsp;<FONT face="Wingdings">&#111;</FONT><BR>(Do not check if a smaller reporting company)</TD><TD align="right">Smaller reporting company&nbsp;<FONT face="Wingdings">&#111;</FONT></TD></TR>
</TABLE>

<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>CALCULATION OF REGISTRATION FEE</B></DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom" style="font-size: 1pt">
    <TD width="1%">&nbsp;</TD>
    <TD width="54%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="23" style="border-bottom: 3px double #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Proposed maximum</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Proposed maximum</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center">Title of securities</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Amount to be</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">offering price</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">aggregate</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">Amount of</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center">to be registered</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">registered(1)(2)</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">per share(3)</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">offering price(3)</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">registration fee</TD>
    <TD width="1%">&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
                    <TD valign="top" style="border-top: 2px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">Common Stock, $.05 par value (2)
</DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" valign="top" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" valign="top" style="border-top: 2px solid #000000">750,000</TD>
    <TD nowrap valign="top" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" valign="top" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" valign="top" style="border-top: 2px solid #000000">44.66</TD>
    <TD nowrap valign="top" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" valign="top" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" valign="top" style="border-top: 2px solid #000000">33,495,000</TD>
    <TD nowrap valign="top" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" valign="top" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" valign="top" style="border-top: 2px solid #000000">1,316.35</TD>
    <TD nowrap valign="top" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD valign="top" style="border-top: 2px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">Preferred Share Purchase Rights (2)
</DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" valign="top" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" valign="top" style="border-top: 2px solid #000000">750,000</TD>
    <TD nowrap valign="top" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" valign="top" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="Center" valign="top" style="border-top: 2px solid #000000" nowrap>N/A(2)</TD>
    <TD nowrap valign="top" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" valign="top" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="Center" valign="top" style="border-top: 2px solid #000000">N/A(2)</TD>
    <TD nowrap valign="top" align="left" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" valign="top" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="center" valign="top" style="border-top: 2px solid #000000">N/A(2)</TD>
    <TD nowrap valign="top" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="23" style="border-top: 3px double #000000">&nbsp;</TD>
</TR>

<!-- End Table Body -->
</TABLE>
</DIV>



<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left">(1)</TD>
    <TD>&nbsp;</TD>
    <TD>The shares of Common Stock being registered consist of 750,000 additional shares that may be
issued under the Willbros Group, Inc. 1996 Stock Plan (the &#147;1996 Stock Plan&#148;). In addition,
this Registration Statement shall cover any additional shares of Common Stock that may become
issuable pursuant to the anti-dilution provisions of the 1996 Stock Plan.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(2)</TD>
    <TD>&nbsp;</TD>
    <TD>Each share of Common Stock registered hereunder includes a Preferred Share Purchase Right
pursuant to the registrant&#146;s Rights Agreement dated April&nbsp;1, 1999, with Mellon Investor
Services, LLC, as Rights Agent.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(3)</TD>
    <TD>&nbsp;</TD>
    <TD>Estimated solely for purposes of calculating the registration fee, pursuant to Rule 457(c) of
the Securities Act of 1933, as amended, on the basis of $44.66 per share, the average of the
high and low sales prices for the Common Stock as reported on the New York Stock Exchange on
June&nbsp;13, 2008.</TD>
</TR>

</TABLE>



<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>

</DIV>



<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>

<DIV style="font-family: 'Times New Roman',Times,serif">




<!-- TOC -->
<A name="toc"><DIV align="CENTER" style="page-break-before:always"><U><B>TABLE OF CONTENTS</B></U></DIV></A>

<P><CENTER>
<TABLE border="0" width="90%" cellpadding="0" cellspacing="0">
<TR>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="76%"></TD>
</TR>
<TR><TD colspan="9"><A HREF="#000">PART II</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#001">Item&nbsp;3. Incorporation of Documents by Reference.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#002">Item&nbsp;8. Exhibits.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#003">Item&nbsp;9. Undertakings.</A></TD></TR>
<TR><TD colspan="9"><A HREF="#004">SIGNATURES</A></TD></TR>
<TR><TD colspan="9"><A HREF="#005">INDEX TO EXHIBITS</A></TD></TR>
<TR><TD colspan="9"><A HREF="h57754exv5.htm">Opinion of Arias, Fabrega & Fabrega</A></TD></TR>
<TR><TD colspan="9"><A HREF="h57754exv23w1.htm">Consent of Grant Thornton LLP</A></TD></TR>
<TR><TD colspan="9"><A HREF="h57754exv23w2.htm">Consent of GLO CPAs, LLLP</A></TD></TR>
</TABLE>
</CENTER>
<!-- /TOC -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>




<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>INCORPORATION OF PRIOR<BR>
REGISTRATION STATEMENTS BY REFERENCE</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This Registration Statement relates to the registration of additional shares of Common Stock
of the registrant to be issued pursuant to the Willbros Group, Inc. 1996 Stock Plan, as amended
(the &#147;1996 Stock Plan&#148;). The additional shares relate to the amendment to the 1996 Stock Plan
approved by the stockholders of the registrant at the Annual Meeting of Stockholders on May&nbsp;29,
2008, to increase the number of shares of Common Stock available for issuance under the 1996 Stock
Plan from 4,075,000 shares to 4,825,000 shares. The contents of the registrant&#146;s Registration
Statements on Form S-8, Registration No.&nbsp;333-18421, Registration No.&nbsp;333-53748, Registration No.
333-74920 and Registration No.&nbsp;135543 filed with the Securities and Exchange Commission on December
20, 1996, January&nbsp;16, 2001, November&nbsp;30, 2001, and June&nbsp;30, 2006, respectively, relating to the
1996 Stock Plan are hereby incorporated by reference in this Registration Statement, except as
amended hereby, pursuant to General Instruction E of Form S-8.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<!-- link1 "PART II" -->
<DIV align="left"><A NAME="000"></A></DIV>
<DIV align="left"><A NAME="000"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>PART II</B>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>

</DIV>
<!-- link2 "Item&nbsp;3. Incorporation of Documents by Reference." -->
<DIV align="left"><A NAME="001"></A></DIV>
<DIV align="left"><A NAME="001"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;3. Incorporation of Documents by Reference.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents filed by Willbros Group, Inc. (the &#147;Registrant&#148;) with the Securities
and Exchange Commission (the &#147;Commission&#148;) are incorporated by reference in this Registration
Statement:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)&nbsp;Annual Report on Form 10-K for the fiscal year ended December&nbsp;31, 2007;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)&nbsp;Quarterly Report on Form 10-Q for the quarter ended March&nbsp;31, 2008;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)&nbsp;Current Reports on Form 8-K filed with the Commission on January&nbsp;22, 2008, February&nbsp;14,
2008, March&nbsp;26, 2008, May&nbsp;15, 2008, and June&nbsp;3, 2008;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4)&nbsp;The description of the Registrant&#146;s Common Stock contained in the Registrant&#146;s
Registration Statement on Form 8-A, dated July&nbsp;19, 1996, and including any amendment or report
heretofore or hereafter filed for the purpose of updating such description; and
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5)&nbsp;The description of the Registrant&#146;s Preferred Share Purchase Rights contained in the
Registrant&#146;s Registration Statement on Form 8-A, dated April&nbsp;9, 1999, and including any amendment
or report heretofore or hereafter filed for the purpose of updating such description.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In addition, all documents subsequently filed by the Registrant pursuant to Sections&nbsp;13(a),
13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended, excluding any information
furnished pursuant to any Current Report on Form 8-K, prior to the filing of a post-effective
amendment which indicates that all securities offered hereby have been sold or which deregisters
all securities offered hereby then remaining unsold, shall be deemed to be incorporated by
reference in this Registration Statement and to be a part hereof from their respective dates of
filing. Any statement contained in a document incorporated by reference shall be deemed to be
modified or superseded for purposes of this Registration Statement to the extent that a statement
contained in any other subsequently filed incorporated document modifies or supersedes such
statement. Any such statement so modified or superseded shall not be deemed, except as so modified
or superseded, to constitute a part of this Registration Statement.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->II-1<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link2 "Item&nbsp;8. Exhibits." -->
<DIV align="left"><A NAME="002"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;8. Exhibits.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents are filed as exhibits to this Registration Statement:
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="94%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Arias, Fabrega &#038; Fabrega.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Grant Thornton LLP.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of GLO CPA&#146;s, LLLP.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.3*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Arias, Fabrega &#038; Fabrega (included in Exhibit&nbsp;5).</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (included on page II-4 of this Registration Statement).</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left">*</TD>
    <TD>&nbsp;</TD>
    <TD>Filed herewith.</TD>
</TR>

</TABLE>


<!-- link2 "Item&nbsp;9. Undertakings." -->
<DIV align="left"><A NAME="003"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;9. Undertakings.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;The undersigned Registrant hereby undertakes:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) To file, during any period in which offers or sales are being made of the
securities registered hereby, a post-effective amendment to this Registration Statement:
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(i)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To include any prospectus required by Section&nbsp;10(a)(3) of the
Securities Act of 1933, as amended (the &#147;Securities Act&#148;);</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(ii)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To reflect in the prospectus any facts or events arising after
the effective date of this Registration Statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate,
represent a fundamental change in the information set forth in this
Registration Statement. Notwithstanding the foregoing, any increase or decrease
in volume of securities offered (if the total dollar value of securities
offered would not exceed that which was registered) and any deviation from the
low or high end of the estimated maximum offering range may be reflected in the
form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the
aggregate, the changes in volume and price represent no more than a 20% change
in the maximum aggregate offering price set forth in the &#147;Calculation of
Registration Fee&#148; table in the effective Registration Statement;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(iii)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To include any material information with respect to the plan
of distribution not previously disclosed in this Registration Statement or any
material change to such information in this Registration Statement.</TD>
</TR>

</TABLE>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%"><I>provided, however</I>, that the undertakings set forth in paragraphs (a)(1)(i) and (a)(1)(ii)
above do not apply if the information required to be included in a post-effective amendment
by those paragraphs is contained in reports filed or furnished to the Commission by the
Registrant pursuant to Section&nbsp;13 or Section 15(d) of the Securities Exchange Act of 1934,
as amended (the &#147;Exchange Act&#148;), that are incorporated by reference in this Registration
Statement.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) That, for the purpose of determining any liability under the Securities Act, each
such post-effective amendment shall be deemed to be a new registration statement relating to
the securities offered therein, and the offering of such securities at that time shall be
deemed to be the initial bona fide offering thereof.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 2%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) To remove from registration by means of a post-effective amendment any of the
securities being registered which remain unsold at the termination of the offering.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->II-2<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;The undersigned Registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the Registrant&#146;s annual report pursuant to
Section 13(a) or Section 15(d) of the Exchange Act (and, where applicable, each filing of an
employee benefit plan&#146;s annual report pursuant to Section 15(d) of the Exchange Act) that is
incorporated by reference in this Registration Statement shall be deemed to be a new registration
statement relating to the securities offered therein, and the offering of such securities at that
time shall be deemed to be the initial bona fide offering thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;Insofar as indemnification for liabilities arising under the Securities Act may be
permitted to directors, officers and controlling persons of the Registrant pursuant to the
foregoing provisions, or otherwise, the Registrant has been advised that, in the opinion of the
Securities and Exchange Commission, such indemnification is against public policy as expressed in
the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the Registrant of expenses incurred or paid by
a director, officer or controlling person of the Registrant in the successful defense of any
action, suit or proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the Registrant will, unless in the opinion of its
counsel the matter has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public policy as expressed
in the Securities Act and will be governed by the final adjudication of such issue.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->II-3<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link1 "SIGNATURES" -->
<DIV align="left"><A NAME="004"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>The Registrant. </B>Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has reasonable grounds to believe that it meets all of the requirements for
filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by
the undersigned, thereunto duly authorized, in the City of Houston, State of Texas on the
20<SUP style="font-size: 85%; vertical-align: text-top">th</SUP> day of June, 2008.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">WILLBROS GROUP, INC.<BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">/s/  Robert R. Harl
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Robert R. Harl&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">President and Chief Executive Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KNOW ALL MEN BY THESE PRESENTS, that each individual whose signature appears below constitutes
and appoints Robert R. Harl, Van A. Welch and John T. Dalton, and each of them, his true and lawful
attorneys-in-fact and agents with full power of substitution, for him and in his name, place and
stead, in any and all capacities, to sign any and all amendments (including post-effective
amendments) to this Registration Statement, and to file the same, with all exhibits thereto, and
all documents in connection therewith, with the Securities and Exchange Commission, granting unto
said attorneys-in-fact and agents, full power and authority to do and perform each and every act
and thing requisite and necessary to be done in or about the premises, as fully to all intents and
purposes as he might or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents, or his or their substitutes, may lawfully do or cause to be done by
virtue hereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has
been signed below by the following persons in the capacities and on the dates indicated:
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="40%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="20%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left"><B>Signature</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="Left"><B>Title</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Date</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ John T. McNabb, II
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
John T. McNabb, II
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director and Chairman of the Board&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">June&nbsp;20, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Robert R. Harl
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Robert R. Harl
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director, Chief Executive
Officer, President and Chief
Operating Officer (Principal
Executive Officer and Authorized
Representative in the United
States)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">June&nbsp;20, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Van A. Welch
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Van A. Welch
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chief Financial Officer and
Senior Vice President (Principal
Financial Officer and Principal
Accounting Officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">June&nbsp;20, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Michael J. Bayer
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ William B. Berry
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
William B. Berry
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">June&nbsp;20, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Arlo B. DeKraai
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Arlo B. DeKraai
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">June&nbsp;20, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Gerald J. Maier
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Gerald J. Maier
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">June&nbsp;20, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Robert L. Sluder
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Robert L. Sluder
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">June&nbsp;20, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ James B. Taylor, Jr.
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
James B. Taylor, Jr.
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">June&nbsp;20, 2008</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ S. Miller Williams
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
S. Miller Williams
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">June&nbsp;20, 2008</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->II-4<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<!-- link1 "INDEX TO EXHIBITS" -->
<DIV align="left"><A NAME="005"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>INDEX TO EXHIBITS</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="6%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="92%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center"><B>Exhibit</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Number</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Description of Document</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Arias, Fabrega &#038; Fabrega.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Grant Thornton LLP.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of GLO CPAs, LLLP.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.3*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Arias, Fabrega &#038; Fabrega (included in Exhibit&nbsp;5).</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (included on page II-4 of this Registration Statement).</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left">*</TD>
    <TD>&nbsp;</TD>
    <TD>Filed herewith.</TD>
</TR>

</TABLE>




<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>



</BODY>
</HTML>
[{"type": "S-8", "sequence": "1", "filename": "h57754sv8.htm", "description": "FORM S-8 - REGISTRATION STATEMENT", "secsgml_size_bytes": 44889}]
{"company-data": {"conformed-name": "WILLBROS GROUP INC", "cik": "0000895450", "assigned-sic": "1389", "irs-number": "980160660", "state-of-incorporation": "R1", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-151795", "film-number": "08909232"}, "business-address": {"street1": "DRESDNER BANK BUILDING", "street2": "50TH STREET 8TH FLOOR PO BOX 850048", "city": "PANAMA 5 REPUBLIC OF", "state": "R1", "zip": "00000", "phone": "5072639282"}, "mail-address": {"street1": "C/O WILLBROS USA INC", "street2": "2431 EAST 61ST STREET SUITE 700", "city": "TULSA", "state": "OK", "zip": "74136"}}
sv8
Table of Contents
As filed with the Securities and Exchange Commission on June 20, 2008.
Registration No. 333 -
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM S-8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
WILLBROS GROUP, INC.
(Exact name of registrant as specified in its charter)
Republic of Panama
(State or other jurisdiction of
incorporation or organization)
98-0160660
(I.R.S. Employer
Identification No.)
Plaza 2000 Building
50th Street, 8th Floor
P.O. Box 0816-01098
Panama, Republic of Panama
(Address, including zip code, of registrant's principal executive offices)
Willbros Group, Inc. 1996 Stock Plan
(Full title of the plan)
Robert R. Harl
President and Chief Executive Officer
Willbros Group, Inc.
c/o Willbros USA, Inc.
4400 Post Oak Parkway, Suite 1000
Houston, TX 77027
(713) 403-8000
(Name, address, including zip code, and telephone number, including area code, of agent for service)
Copy To:
Robert J. Melgaard, Esq.
Conner & Winters, LLP
4000 One Williams Center
Tulsa, Oklahoma 74172
(918) 586-5711
(918) 586-8548 (Facsimile)
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated
filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.
(Check one):
Large accelerated filer
þ
Accelerated filer
o
Non-accelerated filer
o
(Do not check if a smaller reporting company)
Smaller reporting company
o
CALCULATION OF REGISTRATION FEE
Proposed maximum
Proposed maximum
Title of securities
Amount to be
offering price
aggregate
Amount of
to be registered
registered(1)(2)
per share(3)
offering price(3)
registration fee
Common Stock, $.05 par value (2)
750,000
$
44.66
$
33,495,000
$
1,316.35
Preferred Share Purchase Rights (2)
750,000
N/A(2)
N/A(2)
N/A(2)
(1)
The shares of Common Stock being registered consist of 750,000 additional shares that may be
issued under the Willbros Group, Inc. 1996 Stock Plan (the "1996 Stock Plan"). In addition,
this Registration Statement shall cover any additional shares of Common Stock that may become
issuable pursuant to the anti-dilution provisions of the 1996 Stock Plan.
(2)
Each share of Common Stock registered hereunder includes a Preferred Share Purchase Right
pursuant to the registrant's Rights Agreement dated April 1, 1999, with Mellon Investor
Services, LLC, as Rights Agent.
(3)
Estimated solely for purposes of calculating the registration fee, pursuant to Rule 457(c) of
the Securities Act of 1933, as amended, on the basis of $44.66 per share, the average of the
high and low sales prices for the Common Stock as reported on the New York Stock Exchange on
June 13, 2008.
TABLE OF CONTENTS
PART II
Item 3. Incorporation of Documents by Reference.
Item 8. Exhibits.
Item 9. Undertakings.
SIGNATURES
INDEX TO EXHIBITS
Opinion of Arias, Fabrega & Fabrega
Consent of Grant Thornton LLP
Consent of GLO CPAs, LLLP
Table of Contents
INCORPORATION OF PRIOR
REGISTRATION STATEMENTS BY REFERENCE
This Registration Statement relates to the registration of additional shares of Common Stock
of the registrant to be issued pursuant to the Willbros Group, Inc. 1996 Stock Plan, as amended
(the "1996 Stock Plan"). The additional shares relate to the amendment to the 1996 Stock Plan
approved by the stockholders of the registrant at the Annual Meeting of Stockholders on May 29,
2008, to increase the number of shares of Common Stock available for issuance under the 1996 Stock
Plan from 4,075,000 shares to 4,825,000 shares. The contents of the registrant's Registration
Statements on Form S-8, Registration No. 333-18421, Registration No. 333-53748, Registration No.
333-74920 and Registration No. 135543 filed with the Securities and Exchange Commission on December
20, 1996, January 16, 2001, November 30, 2001, and June 30, 2006, respectively, relating to the
1996 Stock Plan are hereby incorporated by reference in this Registration Statement, except as
amended hereby, pursuant to General Instruction E of Form S-8.
Table of Contents
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference.
The following documents filed by Willbros Group, Inc. (the "Registrant") with the Securities
and Exchange Commission (the "Commission") are incorporated by reference in this Registration
Statement:
(1) Annual Report on Form 10-K for the fiscal year ended December 31, 2007;
(2) Quarterly Report on Form 10-Q for the quarter ended March 31, 2008;
(3) Current Reports on Form 8-K filed with the Commission on January 22, 2008, February 14,
2008, March 26, 2008, May 15, 2008, and June 3, 2008;
(4) The description of the Registrant's Common Stock contained in the Registrant's
Registration Statement on Form 8-A, dated July 19, 1996, and including any amendment or report
heretofore or hereafter filed for the purpose of updating such description; and
(5) The description of the Registrant's Preferred Share Purchase Rights contained in the
Registrant's Registration Statement on Form 8-A, dated April 9, 1999, and including any amendment
or report heretofore or hereafter filed for the purpose of updating such description.
In addition, all documents subsequently filed by the Registrant pursuant to Sections 13(a),
13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended, excluding any information
furnished pursuant to any Current Report on Form 8-K, prior to the filing of a post-effective
amendment which indicates that all securities offered hereby have been sold or which deregisters
all securities offered hereby then remaining unsold, shall be deemed to be incorporated by
reference in this Registration Statement and to be a part hereof from their respective dates of
filing. Any statement contained in a document incorporated by reference shall be deemed to be
modified or superseded for purposes of this Registration Statement to the extent that a statement
contained in any other subsequently filed incorporated document modifies or supersedes such
statement. Any such statement so modified or superseded shall not be deemed, except as so modified
or superseded, to constitute a part of this Registration Statement.
II-1
Table of Contents
Item 8. Exhibits.
The following documents are filed as exhibits to this Registration Statement:
5*
Opinion of Arias, Fabrega & Fabrega.
23.1*
Consent of Grant Thornton LLP.
23.2*
Consent of GLO CPA's, LLLP.
23.3*
Consent of Arias, Fabrega & Fabrega (included in Exhibit 5).
24*
Power of Attorney (included on page II-4 of this Registration Statement).
*
Filed herewith.
Item 9. Undertakings.
(a) The undersigned Registrant hereby undertakes:
(1) To file, during any period in which offers or sales are being made of the
securities registered hereby, a post-effective amendment to this Registration Statement:
(i)
To include any prospectus required by Section 10(a)(3) of the
Securities Act of 1933, as amended (the "Securities Act");
(ii)
To reflect in the prospectus any facts or events arising after
the effective date of this Registration Statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate,
represent a fundamental change in the information set forth in this
Registration Statement. Notwithstanding the foregoing, any increase or decrease
in volume of securities offered (if the total dollar value of securities
offered would not exceed that which was registered) and any deviation from the
low or high end of the estimated maximum offering range may be reflected in the
form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the
aggregate, the changes in volume and price represent no more than a 20% change
in the maximum aggregate offering price set forth in the "Calculation of
Registration Fee" table in the effective Registration Statement;
(iii)
To include any material information with respect to the plan
of distribution not previously disclosed in this Registration Statement or any
material change to such information in this Registration Statement.
provided, however
, that the undertakings set forth in paragraphs (a)(1)(i) and (a)(1)(ii)
above do not apply if the information required to be included in a post-effective amendment
by those paragraphs is contained in reports filed or furnished to the Commission by the
Registrant pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934,
as amended (the "Exchange Act"), that are incorporated by reference in this Registration
Statement.
(2) That, for the purpose of determining any liability under the Securities Act, each
such post-effective amendment shall be deemed to be a new registration statement relating to
the securities offered therein, and the offering of such securities at that time shall be
deemed to be the initial bona fide offering thereof.
(3) To remove from registration by means of a post-effective amendment any of the
securities being registered which remain unsold at the termination of the offering.
II-2
Table of Contents
(b) The undersigned Registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the Registrant's annual report pursuant to
Section 13(a) or Section 15(d) of the Exchange Act (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to Section 15(d) of the Exchange Act) that is
incorporated by reference in this Registration Statement shall be deemed to be a new registration
statement relating to the securities offered therein, and the offering of such securities at that
time shall be deemed to be the initial bona fide offering thereof.
(c) Insofar as indemnification for liabilities arising under the Securities Act may be
permitted to directors, officers and controlling persons of the Registrant pursuant to the
foregoing provisions, or otherwise, the Registrant has been advised that, in the opinion of the
Securities and Exchange Commission, such indemnification is against public policy as expressed in
the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the Registrant of expenses incurred or paid by
a director, officer or controlling person of the Registrant in the successful defense of any
action, suit or proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the Registrant will, unless in the opinion of its
counsel the matter has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public policy as expressed
in the Securities Act and will be governed by the final adjudication of such issue.
II-3
Table of Contents
SIGNATURES
The Registrant.
Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has reasonable grounds to believe that it meets all of the requirements for
filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by
the undersigned, thereunto duly authorized, in the City of Houston, State of Texas on the
20
th
day of June, 2008.
WILLBROS GROUP, INC.
By:
/s/  Robert R. Harl
Robert R. Harl
President and Chief Executive Officer
KNOW ALL MEN BY THESE PRESENTS, that each individual whose signature appears below constitutes
and appoints Robert R. Harl, Van A. Welch and John T. Dalton, and each of them, his true and lawful
attorneys-in-fact and agents with full power of substitution, for him and in his name, place and
stead, in any and all capacities, to sign any and all amendments (including post-effective
amendments) to this Registration Statement, and to file the same, with all exhibits thereto, and
all documents in connection therewith, with the Securities and Exchange Commission, granting unto
said attorneys-in-fact and agents, full power and authority to do and perform each and every act
and thing requisite and necessary to be done in or about the premises, as fully to all intents and
purposes as he might or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents, or his or their substitutes, may lawfully do or cause to be done by
virtue hereof.
Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has
been signed below by the following persons in the capacities and on the dates indicated:
Signature
Title
Date
/s/ John T. McNabb, II
John T. McNabb, II
Director and Chairman of the Board
June 20, 2008
/s/ Robert R. Harl
Robert R. Harl
Director, Chief Executive
Officer, President and Chief
Operating Officer (Principal
Executive Officer and Authorized
Representative in the United
States)
June 20, 2008
/s/ Van A. Welch
Van A. Welch
Chief Financial Officer and
Senior Vice President (Principal
Financial Officer and Principal
Accounting Officer)
June 20, 2008
Michael J. Bayer
Director
/s/ William B. Berry
William B. Berry
Director
June 20, 2008
/s/ Arlo B. DeKraai
Arlo B. DeKraai
Director
June 20, 2008
/s/ Gerald J. Maier
Gerald J. Maier
Director
June 20, 2008
/s/ Robert L. Sluder
Robert L. Sluder
Director
June 20, 2008
/s/ James B. Taylor, Jr.
James B. Taylor, Jr.
Director
June 20, 2008
/s/ S. Miller Williams
S. Miller Williams
Director
June 20, 2008
II-4
Table of Contents
INDEX TO EXHIBITS
Exhibit
Number
Description of Document
5*
Opinion of Arias, Fabrega & Fabrega.
23.1*
Consent of Grant Thornton LLP.
23.2*
Consent of GLO CPAs, LLLP.
23.3*
Consent of Arias, Fabrega & Fabrega (included in Exhibit 5).
24*
Power of Attorney (included on page II-4 of this Registration Statement).
*
Filed herewith.