ASSA (Academic Support Service Agreement) is any instructional or professional consulting service, provided by an individual or company that is unique (sole source) and is specifically related to the University's mission of education, research, or public service. This document is completed by UW Purchasing. Payment to an EPD speaker with an ASSA cannot be completed until the ASSA is fully executed by UW Purchasing. An ASSA is required if the speaker is being paid more than $5,000 over a 12 month period of time.