The course (lecture + seminar) will examine a range of institutions that affect the behavior of workers and employers in imperfect labor markets, and thus touch upon a number of important issues in labor economics: minimum wages, employment protection legislation, unemployment benefits, active labor market policies, collective bargaining, early retirement programs, education and migration policies, payroll taxes, and employment-conditional incentives. In order to characterize the effects of these institutions, the course relies on simple yet state-of-the-art theory and reviews corresponding evidence.