================================================================================

                       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) March 14, 2000

                     Structured Asset Securities Corporation

             (Exact Name of Registrant as Specified in Its Charter)

Delaware                            333-49129              74-2440858
--------------------------------------------------------------------------------
(State or Other Jurisdiction        (Commission            (IRS Employer
of Incorporation)                   File Number)           Identification No.)

200 Vesey Street, New York, New York                       10285
--------------------------------------------------------------------------------
(Address of Principal Executive Offices)                 (Zip Code)

Registrant's telephone number, including area code (212) 526-7000
                                                   --------------

--------------------------------------------------------------------------------

          (Former Name or Former Address, if Changed Since Last Report)

================================================================================
<PAGE>

Item 5. Other Events.

      It is expected that during April 2000, a single series of certificates,
expected to be titled LB-UBS, Commercial Mortgage Pass-Through Certificates,
Series 2000-C1 (the "Certificates"), will be issued pursuant to a pooling and
servicing agreement, to be entered into by and among Structured Asset Securities
Corporation (the "Registrant") and a master servicer, a special servicer and a
trustee. It is expected that certain classes of the Certificates (the
"Underwritten Certificates") will be registered under the Registrant's
registration statement on Form S-3 (no. 333-49129) and sold to Lehman Brothers
Inc., Warburg Dillon Read LLC, Morgan Stanley & Co. Incorporated and Deutsche
Bank Securities Inc. (collectively, the "Underwriters") pursuant to an
underwriting agreement to be entered into by and among the Registrant and the
Underwriters.

            In connection with the expected sale of the Underwritten
Certificates, the Registrant has been advised that prospective investors have
been furnished certain information, attached hereto as Exhibits 99.1 and 99.2,
that may be considered "Computational Materials" (as defined in the no-action
letter dated May 20, 1994 issued by the Division of Corporation Finance of the
Securities and Exchange Commission (the "Commission") to Kidder, Peabody
Acceptance Corporation I, Kidder, Peabody & Co. Incorporated, and Kidder
Structured Asset Corporation and the no-action letter dated May 27, 1994 issued
by the Division of Corporation Finance of the Commission to the Public
Securities Association) and/or "ABS Term Sheets" (as defined in the no-action
letter dated February 17, 1995 issued by the Division of Corporation Finance of
the Commission to the Public Securities Association).

      The materials attached hereto have been prepared and provided to the
Registrant with respect to the Underwritten Certificates. The information in
such materials is preliminary and will be superseded by a final prospectus
relating to the Underwritten Certificates and by any other information
subsequently filed with the Commission. To the extent any materials previously
filed by the Registrant with respect to the Underwritten Certificates are
inconsistent with the materials attached hereto, such previously filed materials
are superseded by the materials attached hereto.

Item 7.  Financial Statements and Exhibits.

(a) Financial statements of businesses acquired:

      Not applicable.

(b) Pro forma financial information:

      Not applicable.
<PAGE>

(c) Exhibits:

Exhibit No. Description

99.1        Certain materials constituting Computational Materials and/or ABS
            Term Sheets and disseminated in connection with the expected sale of
            the Underwritten Certificates.

99.2        Certain materials constituting Computational Materials and/or ABS
            Term Sheets and disseminated in connection with the expected sale of
            the Underwritten Certificates.


                                       3
<PAGE>

                                   SIGNATURES

      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.


Date:  March 14, 2000


                                          STRUCTURED ASSET SECURITIES
                                          CORPORATION


                                          By: /s/ Mary Pat Archer
                                              ----------------------------------
                                          Name:  Mary Pat Archer
                                          Title: Managing Director
<PAGE>

                                  EXHIBIT INDEX

            The following exhibits are filed herewith:

Exhibit No.
-----------

99.1        Certain materials constituting Computational Materials and/or ABS
            Term Sheets and disseminated in connection with the expected sale of
            the Underwritten Certificates.

99.2        Certain materials constituting Computational Materials and/or ABS
            Term Sheets and disseminated in connection with the expected sale of
            the Underwritten Certificates.
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================================================================================

                       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) March 14, 2000

                     Structured Asset Securities Corporation

             (Exact Name of Registrant as Specified in Its Charter)

Delaware                            333-49129              74-2440858
--------------------------------------------------------------------------------
(State or Other Jurisdiction        (Commission            (IRS Employer
of Incorporation)                   File Number)           Identification No.)

200 Vesey Street, New York, New York                       10285
--------------------------------------------------------------------------------
(Address of Principal Executive Offices)                 (Zip Code)

Registrant's telephone number, including area code (212) 526-7000
                                                   --------------

--------------------------------------------------------------------------------

          (Former Name or Former Address, if Changed Since Last Report)

================================================================================
Item 5. Other Events.

      It is expected that during April 2000, a single series of certificates,
expected to be titled LB-UBS, Commercial Mortgage Pass-Through Certificates,
Series 2000-C1 (the "Certificates"), will be issued pursuant to a pooling and
servicing agreement, to be entered into by and among Structured Asset Securities
Corporation (the "Registrant") and a master servicer, a special servicer and a
trustee. It is expected that certain classes of the Certificates (the
"Underwritten Certificates") will be registered under the Registrant's
registration statement on Form S-3 (no. 333-49129) and sold to Lehman Brothers
Inc., Warburg Dillon Read LLC, Morgan Stanley & Co. Incorporated and Deutsche
Bank Securities Inc. (collectively, the "Underwriters") pursuant to an
underwriting agreement to be entered into by and among the Registrant and the
Underwriters.

            In connection with the expected sale of the Underwritten
Certificates, the Registrant has been advised that prospective investors have
been furnished certain information, attached hereto as Exhibits 99.1 and 99.2,
that may be considered "Computational Materials" (as defined in the no-action
letter dated May 20, 1994 issued by the Division of Corporation Finance of the
Securities and Exchange Commission (the "Commission") to Kidder, Peabody
Acceptance Corporation I, Kidder, Peabody & Co. Incorporated, and Kidder
Structured Asset Corporation and the no-action letter dated May 27, 1994 issued
by the Division of Corporation Finance of the Commission to the Public
Securities Association) and/or "ABS Term Sheets" (as defined in the no-action
letter dated February 17, 1995 issued by the Division of Corporation Finance of
the Commission to the Public Securities Association).

      The materials attached hereto have been prepared and provided to the
Registrant with respect to the Underwritten Certificates. The information in
such materials is preliminary and will be superseded by a final prospectus
relating to the Underwritten Certificates and by any other information
subsequently filed with the Commission. To the extent any materials previously
filed by the Registrant with respect to the Underwritten Certificates are
inconsistent with the materials attached hereto, such previously filed materials
are superseded by the materials attached hereto.

Item 7.  Financial Statements and Exhibits.

(a) Financial statements of businesses acquired:

      Not applicable.

(b) Pro forma financial information:

      Not applicable.
(c) Exhibits:

Exhibit No. Description

99.1        Certain materials constituting Computational Materials and/or ABS
            Term Sheets and disseminated in connection with the expected sale of
            the Underwritten Certificates.

99.2        Certain materials constituting Computational Materials and/or ABS
            Term Sheets and disseminated in connection with the expected sale of
            the Underwritten Certificates.

                                       3
SIGNATURES

      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.

Date:  March 14, 2000

                                          STRUCTURED ASSET SECURITIES
                                          CORPORATION

                                          By: /s/ Mary Pat Archer
                                              ----------------------------------
                                          Name:  Mary Pat Archer
                                          Title: Managing Director
EXHIBIT INDEX

            The following exhibits are filed herewith:

Exhibit No.
-----------

99.1        Certain materials constituting Computational Materials and/or ABS
            Term Sheets and disseminated in connection with the expected sale of
            the Underwritten Certificates.

99.2        Certain materials constituting Computational Materials and/or ABS
            Term Sheets and disseminated in connection with the expected sale of
            the Underwritten Certificates.