We examine long-term wage contracts between a risk-neutral firm and a risk-averse worker when both can costlessly renege and buy or sell labour at a random spot market wage. A self-enforcing contract is one in which neither party ever has an incentive to renege. In the optimum self-enforcing contract, wages are sticky: they are less variable than spot market wages and positively serially correlated. They are updated by a simple rule: around each spot wage is a time invariant interval, and the contract wage changes each period by the smallest amount necessary to bring it into the current interval.

Recent work on consumption allocations in village economies finds that idiosyncratic variation in consumption is systematically related to idiosyncratic variation in income, thus rejecting the hypothesis of full risk-pooling. We attempt to explain these observations by adding limited commitment as an impediment to risk-pooling. We provide a general dynamic model and completely characterise efficient informal insurance arrangements constrained by limited commitment, and test the model using data from three Indian villages. We find that the model can fully explain the dynamic response of consumption to income, but that it fails to explain the distribution of consumption across households.