Policies and Procedures Back to Previous Document Number: PS-28 Title/Topic: Employment and Payment of Contingent Employees Effective Date: 06/02/1997 Revision Number: PS0028.R04 Category: Policy Statement Employment and Payment of Contingent Employees All files in this database are stored as PDF files. In order to view a file, Adobe Acrobat Reader must be installed on your computer. Click here to download a free copy of Acrobat Reader 5. PS28 R04.pdf