for example, salaryincrements on an established scale, assurances of security ... pension rights ... and ... welldefined career opportunities’ (Erikson and Goldthorpe 1992, p. 42). As far as monitoringdifficulties are concerned this solution is one which is familiar in the game theory literature:the temptation to defect and gather a short-term gain is offset by the prospect of extended andlong term payoffs as a reward for cooperation.