Modern job search technologies enable job seekers to monitor the arrival of newly posted vacancies. This paper conceptualizes search as a monitoring decision and shows that monitoring technologies give rise to a novel source of strategic complementarities in search and can thus lead to potentially destabilizing multiplicity of equilibria. The model provides a theory of belief-driven fluctuations in labor supply that can permanently shift the path of the economy, and offers an explanation for persistently weak wage growth despite low unemployment during the recovery from the Great Recession. •Theoretical model of search as monitoring decision.•First-mover advantage leads to strategic complementarities and multiple equilibria.•Model gives rise to belief-driven labor supply fluctuations.•Model can help to account for overshooting of unemployment after Great Recession despite tepid wage growth.