He was a member of the New Zealand Universities Rugby Council for 34 years from 1936 to 1949, later chairman and life member. He was first elected to the
New Zealand Rugby Football Union executive in 1957, and became chairman from 1977 until he retired from the board in 1985. He was a delegate to the International Rugby Board from 1964 to 1986 (chairman in 1965, 1972 and 1985), and was on the board's Laws Committee from 1972 to 1985. The decision of the NZRFU to invite a South African team to tour New Zealand in
1981 attracted international criticism, and Blazey was prominent as the NZRFU spokesman. He had been chairman of the
New Zealand Amateur Athletic Association (NZAAA) from 1966, but stood down in 1981 because of the perceived conflict of interest. He was also a member of the
New Zealand Olympic and Commonwealth Games Association from 1956 to 1980. In 1990, Blazey was an inaugural inductee into the
New Zealand Sports Hall of Fame. He was promoted to
Commander of the Order of the British Empire in the
1991 Queen's Birthday Honours, for services to sport, especially rugby. ==Other activities==