“…Empirical studies on the relationship between WFWD and firm performance report diverging results. Some studies find a positive link (Iranzo, Schivardi and Tosetti, 2008;Lee, Lev and Yeo, 2008;Lallemand, Plasman and Rycx, 2009;Arranz-Aperte, 2014), others negative (Grund and Westergaard-Nielsen, 2008), yet other studies find a curvilinear relationship (Mahy, Rycx and Volral, 2011b) or non-robust, weak or no significant relationship at all (Hunnes, 2009;Liu, Tsou and Wang, 2010), and some find that the WFWD-performance link is moderated by firms' personnel policies and institutional environment (Jirjahn and Kraft, 2007;Mahy, Rycx and Volral, 2011a).…”