The Ontario Federation of Labour is a federation of labour unions in the Canadian province of Ontario. The original OFL was established by the Canadian Congress of Labour in 1944. It was merged with the rival in 1957 (now considered the modern OFL's founding date), one year after the merger of the CCL and the (the OPFL's parent federation). It is now the provincial federation of the Canadian Labour Congress. Elroy Robson was the original OFL's first president and William Sefton was its first secretary-treasurer.