Fighting collusion has long been a challenge in organizations, whilst favoritism in organizations has long been attacked as one of the most important sources of workplace conflicts. This paper links the phenomena of collusion and favoritism together which seem to be irrelevant. We show that...

This paper shows how separately itemised surcharges potentially facilitate collussion during a temporary cost shock if firms commit to their duration. A duopoly model with price-matching punishments shows that if firms set higher prices they only receive punishment during the shock because they...