Employment Verification

Guckenheimer utilizes The Work Number® by Equifax to complete all requests for verification of employment and income for our employees. To obtain proof of employment or income via The Work Number, you will need:

  • Guckenheimer’s employer code: 16677
  • The employee’s Social Security Number
  • A permissible purpose for accessing the information, as defined by the Fair Credit Reporting Act
  • Direct employee consent, if income or salary information is needed
  • Credentialed access to use The Work Number

For more information on accepted permissible purposes and using The Work Number, please visit (www.theworknumber.com/verifiers), or call The Work Number client service center at 1-800-367-5690.

For Social Service Verifications:
For Federal, State, Local Agencies needing employment and income information to determine eligibility for social benefits, please visit (www.theworknumber/socialservices) or call 1-800-660-3399 for more information on registering with and using the Work Number service.


1850 Gateway Dr. Suite 500
San Mateo, CA 94404

Main: (650) 592-3800

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