Job search is generally described by an intensive effort margin such as the number of applications sent or of hours devoted. Using rich online job board data and a novel network method to determine relevant sets of ads for each applicant, we also investigate the job search selective margin, i.e. why workers apply to or
We prove that group strategy-proofness and strategy-proofness are equivalent requirements on stable mechanisms in priority-based resource allocation problems with multi-unit demand. The result extends to the model with contracts.