agent that defects from fines and from other agents' punishment; and (b) by increasing the riskiness of crime/collusion, in …

main finding is that in optimal collusion, interaction between intra-firm (internal) contracting and inter-firm collusion … may be exploited; inter-firm collusion may enhance the efficiency of internal contract, and conversely, internal … contracting may facilitate collusion …

giving a “veto” power to the agent. This, in turn, restricts the manipulation of report by the supervisor. Thus, the exit … robust to the case under collusion between the supervisor and the agent. We also examine the optimal size of the exit option …

Within the heterogeneous independent private values model, we analyze bidder collusion at first and second price single … or the amount paid. To analyze collusion, a richer environment is required than that required to analyze non … coalition at a second price auction captures the entire collusive gain. For collusion to be effective at a first price auction …