Minister of Indian Affairs and Northern Development (1979–1980) Appointed to Cabinet by Prime Minister
Joe Clark, Epp became the first
Mennonite in Canadian history to serve as a federal
cabinet minister. In June 1979, he issued the "Epp Letter," which instructed the
commissioner of the Yukon to cede authority to the territory’s elected executive council. This move significantly advanced responsible government in Yukon.
Minister of National Health and Welfare, (1984–1989). Under Prime Minister
Brian Mulroney, Epp chaired the Cabinet Committee on Social Development and led early federal responses to the
HIV/AIDS crisis. He initiated Canada’s first national AIDS strategy in the late 1980s and expanded tobacco control regulations. His tenure was marked by efforts to promote preventive health and social policy reform, though he faced public criticism for the government’s early handling of AIDS funding and access.
Minister of Energy, Mines and Resources (1989–1993). In 1989, Epp was appointed Minister of Energy, Mines and Resources. He was responsible for Canada's energy and natural resource policies during a period of increased attention to energy security, deregulation, and environmental impact. He oversaw federal initiatives on resource development and national energy planning until his departure from Cabinet in 1993. ==Post-parliamentary career==