INTRODUCTION This is not a review of the participation literature, because as Locke and Schweiger noted in 1979, that literature "is so enormous that to achieve a complete 'review' is virtually impossible" (p. 280). Hence, this "state-of-theart" review is an attempt to identify major themes in the ongoing organisational psychological discourse on participation, to point out important theoretical and methodological developments and findings, and to underline significant gaps in our knowledge.