“…While the overall results on firm characteristics have been inconclusive, a number of researchers have pointed to the presence and quality of union representation, the knowledge and militancy of front-line workers, the positive management attitudes and knowledge, and the level of government enforcement of the legislation as factors relevant to joint committee effectiveness or health and safety outcomes (Eaton, 1994;Eaton and Voos, 1994;Hall, 1993Hall, , 1999Kochan, Dyer and Lipsky, 1977;Lewchuk, Robb and Walters, 1996;Milgate, Innes and O'Loughlin, 2002;Novek, Yassi and Spiegel, 1991;Shannon et al, 1992;Shearn, 2004;Tucker, 1995;Walters, 1996aWalters, , 1996bWalters and Haines, 1988).…”