I compare alternative game forms for situations where a buyer needs a sequence of human asset services. The hierarchy is defined as a game form in which the parties engage in once- and-for-all wage negotiation, the boss describes desired services sequentially, and either party may terminate the...

The Diamond-Mortensen-Pissarides search and matching model is the workhorse of labor macro, but it has difficulty in simultaneously matching the cyclical behavior of job loss and vacancies when taken to the data. By completely ignoring frictions in job creation and focusing instead on firm-level...