Young professionals typically do not enter into life-long employment relations with a single firm. Therefore, future employers can learn about individuals' abilities from the observable facts regarding earlier work relations. We show that these informational spill-overs have profound...

We propose a model to evaluate the U.K.'s zero-hours contract (ZHC) - a contract that exempts employers from the requirement to provide any minimum working hours, and allows employees to decline any workload. We find quantitatively that ZHCs improve welfare by enabling firms with more volatile...