<HTML>
<HEAD>
     <TITLE></TITLE>
</HEAD>
<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

<P STYLE="margin: 0"></P>

<div style="TEXT-ALIGN: center; TEXT-INDENT: 0pt; DISPLAY: block"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold"></FONT>

<!-- Field: Rule-Page --><DIV ALIGN="LEFT" STYLE="margin-top: 12pt; margin-bottom: 3pt"><DIV STYLE="font-size: 1pt; border-top: Black 2pt solid; border-bottom: Black 1pt solid; width: 100%">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<FONT STYLE="display: inline; font: bold 10pt Times New Roman"></FONT></DIV>

<DIV STYLE="text-align: center; text-indent: 0pt; display: block"><FONT STYLE="display: inline; font: bold 10pt Times New Roman">&nbsp;</FONT></DIV>

<DIV STYLE="text-align: center; text-indent: 0pt; display: block"><FONT STYLE="display: inline; font: bold 10pt Times New Roman">UNITED
STATES</FONT></DIV>

<DIV STYLE="text-align: center; text-indent: 0pt; display: block"><FONT STYLE="display: inline; font: bold 10pt Times New Roman">SECURITIES AND EXCHANGE COMMISSION</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Washington, D.C.&#160;&#160;20549</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">FORM 8-K</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">CURRENT REPORT</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Date of report (Date of earliest event reported):&#160;&#160;&#160;May 5, 2014</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">OTTER TAIL CORPORATION</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">(Exact name of registrant as specified in its charter)</font></div>

<div align="center">
<div align="center">
<table bgcolor="white" cellpadding="0" cellspacing="0" width="100%" style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr>
<td width="25%" style="TEXT-ALIGN: center"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td width="25%" style="TEXT-ALIGN: center"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td width="25%" style="TEXT-ALIGN: center"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
</tr><tr>
<td width="25%" style="TEXT-ALIGN: center"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Minnesota</font></td>
<td width="25%" style="TEXT-ALIGN: center"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">0-53713</font></td>
<td width="25%" style="TEXT-ALIGN: center"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">27-0383995</font></td>
</tr><tr>
<td width="25%" style="TEXT-ALIGN: center">
<div><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(State or other jurisdiction</font></div>

<div>of incorporation)&#160;&#160;</div>
</td>
<td width="25%" style="TEXT-ALIGN: center">
<div><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(Commission</font></div>

<div>File Number)&#160;&#160;</div>
</td>
<td width="25%" style="TEXT-ALIGN: center">
<div><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;(I.R.S. Employer</font></div>

<div>Identification No.)</div>
</td>
</tr></table>
</div>

<div>&#160;</div>

<div align="center">
<table bgcolor="white" cellpadding="0" cellspacing="0" width="100%" style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr>
<td width="40%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td width="22%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td width="38%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
</tr><tr>
<td width="40%" style="TEXT-ALIGN: center"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">215 South Cascade Street, P.O. Box 496, Fergus Falls, MN</font></td>
<td width="22%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td width="38%" style="TEXT-ALIGN: center"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">56538-0496</font></td>
</tr><tr>
<td width="40%" style="TEXT-ALIGN: center"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">(Address of principal executive offices)&#160;&#160;</font></td>
<td width="22%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td width="38%" style="TEXT-ALIGN: center"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;(Zip Code)</font></td>
</tr></table>
</div>
</div>

<div><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Registrant<font style="DISPLAY: inline; FONT-FAMILY: Times New Roman">&#8217;</font>s telephone number, including area code:&#160;&#160;&#160;</font>(866) 410-8780</font></font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: -40.5pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline;" face="Wingdings">o</font>&#160;Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: -40.5pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline;" face="Wingdings">o</font>&#160;Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: -40.5pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline;" face="Wingdings">o</font>&#160;Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act&#160;(17 CFR 240.14d-2(b))</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: -22.5pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline;" face="Wingdings">o</font>&#160;Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: -22.5pt" align="left">&#160;</div>

<!-- Field: Page; Sequence: 1 -->
    <DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom:Gainsboro 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">&#160; </TD></TR></TABLE></DIV>
    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->
<P STYLE="font: 1pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>



<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">&#160;</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">Item 2.02&#160;&#160;&#160;&#160;&#160;Results of Operations and Financial Condition</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div style="TEXT-ALIGN: left; TEXT-INDENT: 36pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">On May 5, 2014 Otter Tail Corporation issued a press release concerning consolidated financial results for the first quarter of 2014.&#160;&#160;A copy of the press release is furnished herewith as Exhibit&#160;99.1.</font></font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">Item 9.01&#160;&#160;&#160;&#160;&#160;Financial Statement and Exhibits</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div>
<table align="center" border="0" cellpadding="0" cellspacing="0"  width="100%" style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
<td style="WIDTH: 18pt">
<div><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">&#160; </font></div>
</td>
<td style="WIDTH: 27pt">
<div style="TEXT-INDENT: 0pt; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">(d)</font></div>
</td>
<td>
<div align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Exhibits</font></div>
</td>
</tr></table>
</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div>
<table align="center" border="0" cellpadding="0" cellspacing="0"  width="100%" style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr valign="top">
<td style="WIDTH: 43.5pt">
<div><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">&#160; </font></div>
</td>
<td style="WIDTH: 27pt">
<div style="TEXT-INDENT: 0pt; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">99.1</font></div>
</td>
<td>
<div align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Press Release issued May 5, 2014.</font></div>
</td>
</tr></table>
</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">Signature</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div style="TEXT-ALIGN: left; TEXT-INDENT: 36pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">
<div>
<table border="0" cellpadding="0" cellspacing="0" width="100%" style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">
<tr>
<td valign="top" width="50%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="3%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="35%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="12%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
</tr><tr>
<td valign="top" width="50%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td colspan="2" valign="top" width="38%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">OTTER TAIL CORPORATION</font></td>
<td valign="top" width="12%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
</tr><tr>
<td valign="top" width="50%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Date: May 6, 2014</font></td>
<td valign="top" width="3%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="35%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="12%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
</tr><tr>
<td valign="top" width="50%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="3%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="35%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="12%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
</tr><tr>
<td align="left" valign="top" width="50%" style="BORDER-BOTTOM: #ffffff solid">
<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></div>
</td>
<td valign="top" width="3%" style="BORDER-BOTTOM: #ffffff solid">
<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">By </font></div>
</td>
<TD STYLE="text-align: left; vertical-align: bottom; border-bottom: Black 1pt solid"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">/s/ Kevin G. Moug</font></td>
<td valign="top" width="12%" style="BORDER-BOTTOM: #ffffff solid"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
</tr><tr>
<td valign="top" width="50%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="3%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td align="left" nowrap valign="bottom" width="35%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Kevin G. Moug</font></td>
<td valign="top" width="12%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
</tr><tr>
<td valign="top" width="50%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="3%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="35%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Chief Financial Officer</font></font></td>
<td valign="top" width="12%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
</tr><tr>
<td valign="top" width="50%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="3%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="35%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
<td valign="top" width="12%"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
</tr></table>
</div>
</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<!-- Field: Page; Sequence: 1 -->
    <DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom:Gainsboro 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">2</TD></TR></TABLE></DIV>
    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->
<P STYLE="font: 1pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>



<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">EXHIBIT INDEX</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; TEXT-DECORATION: underline">Exhibit</font>&#160;&#160;&#160;&#160;<font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; TEXT-DECORATION: underline">Description of Exhibit</font></font></font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">99.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;Press release, dated May 5, 2014</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>

<!-- Field: Page; Sequence: 1 -->
    <DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom:Gainsboro 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">3</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->
<P STYLE="font: 1pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


</body>
</html>
[{"type": "8-K", "sequence": "1", "filename": "t79221_8k.htm", "description": "FORM 8-K", "secsgml_size_bytes": 20867}]
{"company-data": {"conformed-name": "Otter Tail Corp", "cik": "0001466593", "assigned-sic": "4911", "irs-number": "270383995", "state-of-incorporation": "MN", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-53713", "film-number": "14816561"}, "business-address": {"street1": "215 S CASCADE ST", "street2": "PO BOX 496", "city": "FERGUS FALLS", "state": "MN", "zip": "56538-0496", "phone": "866-410-8780"}, "mail-address": {"street1": "215 S CASCADE ST", "street2": "PO BOX 496", "city": "FERGUS FALLS", "state": "MN", "zip": "56538-0496"}, "former-company": {"former-conformed-name": "Otter Tail Holding Co", "date-changed": "20090618"}}
UNITED
STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of report (Date of earliest event reported):   May 5, 2014
OTTER TAIL CORPORATION
(Exact name of registrant as specified in its charter)
Minnesota
0-53713
27-0383995
(State or other jurisdiction
of incorporation)
(Commission
File Number)
(I.R.S. Employer
Identification No.)
215 South Cascade Street, P.O. Box 496, Fergus Falls, MN
56538-0496
(Address of principal executive offices)
(Zip Code)
Registrant
'
s telephone number, including area code:
(866) 410-8780
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 2.02     Results of Operations and Financial Condition
On May 5, 2014 Otter Tail Corporation issued a press release concerning consolidated financial results for the first quarter of 2014.  A copy of the press release is furnished herewith as Exhibit 99.1.
Item 9.01     Financial Statement and Exhibits
(d)
Exhibits
99.1
Press Release issued May 5, 2014.
Signature
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
OTTER TAIL CORPORATION
Date: May 6, 2014
By
/s/ Kevin G. Moug
Kevin G. Moug
Chief Financial Officer
2
EXHIBIT INDEX
Exhibit
Description of Exhibit
99.1         Press release, dated May 5, 2014
3