Work motivation and performance were analysed from the perspective of socia
l identity theory and self-categorisation theory. Central in this analysis
is the relation of organisational identification with the motivation to exe
rt effort on behalf of the collective. A theoretical analysis as well as a
review of empirical studies of the relationship of organisational identific
ation with motivation and performance leads to the conclusion that identifi
cation is positively related to work motivation, task performance, and cont
extual performance to the extent that (a) social identity is salient, and (
b) high performance is perceived to be in the group's or organisation's int
erest.