The collection consists of papers of Ken Cropper relating to his work in labor activism. The bulk of the collection concerns Cropper's work as political organizer for the Service Employees International Union (SEIU) Local 140, which represents public school custodians in Portland, Oregon. These materials include records of and relating to SEIU Local 140 and Portland Public Schools custodians generally; Portland Public Schools; and the Portland Habilitation Center, with which Portland Public Schools contracted after laying off the custodians in SEIU Local 140. The records consist of correspondence, largely e-mail or fax; administrative records; contract agreements; and original and photocopied newspaper articles and clippings. Other materials in the collection include records relating to Qualified Rehabilitation Facilities (QRFs) and job outsourcing generally; school custodians in Beaverton, Oregon, and Hillsboro, Oregon; other union organizations; and Oregon state legislation.