Perceived organizational justice is an important factor for prediction of various aspects of OCBs. This research
investigates the extent to which equity sensitivity moderates the relationship between perceived organizational
justice and OCBs. It was hypothesized that distributive, procedural, informational and interpersonal justice are
related to OCBs (helping behavior, civic virtue, and sportsmanship) and equity sensitivity has been moderate
these relationships. Research sample group were 123 employees of a petrochemical company in Iran. The
moderated hierarchical regression analysis indicated that equity sensitivity moderates the relationship between
perceived distributive organizational justice with civic virtue and sportsmanship. That is, in entitled group (and
no in equity sensitive or benevolent groups) distributive justice positively and significantly related to civic virtue
and sportsmanship (P<0.05). Also results indicated that equity sensitivity moderates the relationship between
perceived procedural organizational justice and sportsmanship. That is, in an equity sensitive group (and no in
entitled or benevolent groups) procedural justice positively and significantly related to sportsmanship (P<0.05).