“…Previous empirical research about the relationship between discrimination and market competition has pursued two main approaches. The focus of studies at the industry level is whether in sectors sheltered by regulation, employers hire relatively more male workers (Ashenfelter and Hannan, 1986), or favor male over female workers in terms of wages and promotion (Black and Strahan, 2001;Black and Brainerd, 2004). More recently, studies at the firm level have tested for cross-sectional correlation between female employment and profitability among firms with varying degree of product market power (Hellerstein, Neumark, and Troske, 2002;Kawaguchi, 2007;Heyman, Svaleryd, and Vlachos, 2011).…”