摘要:Based on a sequence of reforms in the Norwegian unemployment insurance (UI) system, we show that activity-oriented UI regimes - i.e., regimes with a high likelihood of required participa-tion in active labor market programs, duration limitations on unconditional UI entitlements, and high sanction probabilities - deliver substantially shorter unemployment spells than pure income-insurance regimes. Soft constraints, in the form of activity requirements or small benefit cuts af-ter a pre-specified UI duration, have many of the same behavioral consequences as threats of complete benefit termination. Early introduction of a soft constraint appears particularly effec-tive; our results show that the expected unemployment duration falls by half a day for each week the soft constraint is moved ahead in the UI spell. Mild sanctions, in the form of temporary bene-fit terminations in response to inadequate search effort or excess choosiness, cause a significant rise in the job hazard.