Abstract: | Despite an increasing number of studies showing a positive relationship between collective organisational citizenship behaviour (OCB) and unit or organisational performance, relatively little is known about the antecedents of collective OCB. In this study, we developed a collective social exchange approach to collective OCB. We hypothesised that a high performance work system (HPWS) is positively related to collective OCB through collective affective commitment (AC). We obtained data on HPWS, collective AC and collective OCB, all at the middle management group level, from 454 firms in China. Empirical results support the hypotheses. |