SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 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)        June 20, 2002
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                               UNOCAL CORPORATION
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             (Exact name of registrant as specified in its charter)



                                    Delaware
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                 (State or Other Jurisdiction of Incorporation)



    1-8483                                   95-3825062
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(Commission File Number)                (I.R.S. Employer Identification No.)



2141 Rosecrans Avenue, Suite 4000, El Segundo, California         90245
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(Address of Principal Executive Offices)                       (Zip Code)



                                 (310) 726-7600
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              (Registrant's Telephone Number, Including Area Code)



Item 5.      Other Events

Gulf Region USA Restructuring
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The Company's  Gulf Region  business unit commenced a  restructuring  program to
improve its overall cost  structure and  profitability  and better  position the
unit for  ongoing  exploratory  success.  The  actions  taken so far  under  the
restructuring  program are expected to reduce pre-tax costs by approximately $20
million per year by making organizational  changes to eliminate unnecessary work
processes  and  reconfiguring  the  business  unit to meet  current  and  future
business needs.

The  restructuring  measures  involve  about 200  layoffs  from the Gulf  Region
workforce in the Company's Sugar Land,  Texas,  office and field locations.  The
cuts represent about 7 percent of the Company's total U.S. workforce.  The focus
of the exploration  program has been redirected from the Gulf of Mexico's mature
shallow depths to the emerging "deep shelf" play.

The  restructuring  also will involve the divestment of low margin properties by
the end of 2002. The divestments  will allow the Gulf Region unit to concentrate
its efforts on more profitable  fields and potentially  high impact  exploration
prospects.  The impact of the asset sales on production and reserves is expected
to be minimal.

The Company expects to record an after-tax charge of  approximately  $12 million
for the layoff part of the restructuring program in the second quarter of 2002.

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.




                                                 UNOCAL CORPORATION
                                                   (Registrant)




Date:  June 25, 2002                        By:  /s/ JOE D. CECIL
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                                                  Joe D. Cecil
                                                  Vice President and Comptroller

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