“…On the other hand, there is extensive evidence that PSPs are associated with enhanced firm productivity, either measured as a firm's value‐added or as sales per employee: in other words, one dollar of labour resources in a firm with a PSP raises productivity by more than one dollar of labour resources in a firm without a PSP (e.g. Bell and Neumark, 1993; Cable and Wilson, 1990; Conte and Svejnar, 1988; Defourney et al, 1985; Fitzroy and Kraft, 1987; Kim, 1998; Kruse, 1991; Kumbhakar and Dunbar, 1993; Wadhwani and Wall, 1990). In a path‐breaking study, Kruse (1993) actually shows that profit‐sharing adoption can produce a one‐time increment in productivity that is maintained over time.…”