Library Technicians, Systems Analysts, Food Service Staff, Custodial Staff, Office Specialists… This is just a small sampling of the roles that SEIU 503 Higher Ed members play on seven campuses across the state (PSU, OSU, WOU, UO, SOU, EOU and Oregon Tech). Also known as “classified staff,” SEIU 503 members keep Oregon a great place to learn: Oregon’s public universities work because we do.