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 20, 2000

                     Structured Asset Securities Corporation

             (Exact Name of Registrant as Specified in Its Charter)

Delaware                          333-49129-04                   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, a
trustee and a fiscal agent. 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 Exhibit 99.1, 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.


                                       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 22, 2000

                                         STRUCTURED ASSET SECURITIES CORPORATION


                                         By: /s/ Paul Hughson
                                             -----------------------------------

                                          Name: Paul Hughson
                                          Title: Senior Vice President
<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.


                                        5
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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 20, 2000

                     Structured Asset Securities Corporation

             (Exact Name of Registrant as Specified in Its Charter)

Delaware                          333-49129-04                   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, a
trustee and a fiscal agent. 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 Exhibit 99.1, 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.

                                       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 22, 2000

                                         STRUCTURED ASSET SECURITIES CORPORATION

                                         By: /s/ Paul Hughson
                                             -----------------------------------

                                          Name: Paul Hughson
                                          Title: Senior Vice President
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.

                                        5