When a treatment unambiguously defines the treatment and control groups at a given time point, its effects are usually found by comparing the two groups' mean responses. But there are many cases where the treatment timing is chosen, for which the conventional approach fails. This paper sets up...

Our search model combines two search methods, the public employment service (PES) and random search. The separation rate is endogenous, the job matching process consists of three rounds. In the first and the second respectively the short-term (STU) and the long-term unemployed (LTU) randomly...