PO Box 200350, San Antonio, TX 78220-0350. Number of Employees in the Greater San Antonio Area.The Employee Self Service page of PeopleSoft will open. To locate the I-9, click the Personal Details tile and select the Form I-9 tab. Use this form to authorize an individual or service company to represent an employer in all matters before the Texas Workforce Commission (TWC). All full-time civilian City of San Antonio employees and their eligible dependents have the ability to participate in the Civilian Benefits Program. Speedy Application Tip: To automatically complete a large section of our online application you can choose to upload your resume. All City and State licensed contractors must register with the City before they can get any permits. Learn more about requirements and how to register.