Payroll Services

How to Verify a Social Security Number

You may verify up to 5 social security numbers for employment purposes only with the Social Security Administration by calling this number:


Be prepared to give the following information to the operator:

  • Your name
  • Employer's name and tax id number WSU 91-6001108
  • The employee's name, social security number and birthdate

Using the correct social security number ensures the accurate posting of earnings to an employee's account.

Payroll Services, PO Box 641024, Washington State University, Pullman WA 99164-1024, 509-335-9575, Contact Us