Employee Self Service


ESS is an online Portal that will enable COSA employees to access their important information through an easy-to-use web site.

Use the ESS Portal to:

  • Review pay stubs: pay stubs dating back to October 2004 are at your fingertips.
  • Check Leave Balances
  • Do Time Entry (note: applies only to employee who enter their own exception leave -- "self time employees")
  • Find colleagues throughout the City using the Employee Directory (Who’s Who)
  • Benefits Enrollment – OPEN October 17th through November 16th (User Guide)

Note: If Using IE8/9 Need to enable Compatibility View -- Please Read Tutorial section. Avoid using the browser back button.

Who has Access:

By October 1, 2011 all City employees will have access to the ESS Portal. If you already have a Windows account; you should be able to use your current Window’s account to log into ESS.


Please Review Links below for step by step instructions on:

For additional help and/or questions, please email ESSPortal.-Finance@sanantonio.gov

Ready to access ESS Portal