The fonds consists of B.C. Electric Office Employees' Association minutes (1921-1955) and office files (1929-1962); OEIU, Local 378 minutes (1955-1964); OTEU, Local 378 minutes (1964 -1980) and office files (1952-1978); office files for the various B.C. Electric and B.C. Hydro affiliates (1962-1978) and miscellaneous subject files. The latest accession consists of records relating to labour arbitrations between the Labour Relations Board of B.C. and Union employees.