The Nordic Economic Policy Review is published by the Nordic Council of Ministers. This year's issue is part of the Danish presidency programme for the Nordic Council of Ministers in 2015. The review addresses policy issues in a way that is useful for in-formed non-specialists as well as for professional economists. All articles are commissioned from leading professional economists and are subject to peer review prior to publication. The review appears once a year. It is published electronically on the website of the Nordic Council of Ministers: www.norden.org/en. On that website, you can also order paper copies of the Review (enter the name of the Review in the search field, and you will find all the information you need).

During the 1990s, a new subsidized early retirement option was assigned quasi-randomly to two-thirds of Norwegian elderly workers. We use this 'natural experiment' to evaluate how economic incentives affect retirement behaviour. The new retirement option reduced employment substantially, and this effect escalated over time. It did not substitute for disability pension or long-term unemployment, and approximately two out of three retirees would have stayed employed without it. Subsidized retirement was primarily voluntary, but there is also some evidence that firms took advantage of the retirement programme to 'push out' excess workers.

Does an income tax harm economic efficiency more the more progressive it is? Public economics provides a strong case for a definite "yes". But at least three forces may pull in the other direction. First, low-wage workers may on average have more elastic labour supply schedules than high-wage workers, in which case progressive taxes contribute to a more efficient allocation of the total tax burden. Second, in non-competitive labour markets, progressive taxes may encourage wage moderation, and hence reduce the equilibrium level of unemployment. And third, if wage setters have egalitarian objectives, progressive taxes may reduce the need for redistribution in pre-tax wages, and hence increase the demand for low-skilled workers. This paper surveys the theoretical, as well as the empirical literature about labour supply, taxes and wage setting. We conclude that in a second best world, the trade-off between equality and efficiency is not always inevitable.

Based on individual longitudinal data, we examine the evolution of employment and earnings of post-EU accession Eastern European labour immigrants to Norway for a period of up to eight years after entry. We find that the migrants were particularly vulnerable to the negative labour demand shock generated by the financial crisis. During the winter months of 2008/09, the fraction of immigrant men claiming unemployment insurance benefits rose from below 2 to 14 per cent. Some of this increase turned out to be persistent, and unemployment remained considerably higher among immigrants than natives even three years after the crisis. Although we find that negative labour demand shocks raise the probability of return migration, the majority of the labour migrants directly affected by the downturn stayed in Norway and claimed unemployment insurance benefits.

We investigate long-term absenteeism in Norway, on the basis of register data covering 8 years and more than two million absence spells. Key findings are that: (1) a tighter labor market yields lower work resumption rates for persons who are absent, and higher relapse rates for persons who have already resumed work; and (2) the work resumption rates increase when sickness benefits are exhausted, but work resumptions at this stage tend to be short-lived.

Based on administrative registers from Norway, we examine how unemployment insurance (UI) and active labor market programs (ALMP) affect the transition rates from unemployment to regular employment and entrepreneurship. We find that the entrepreneurship hazard is highly responsive with respect to UI incentives, and that the probability of starting up a new business increases sharply around the time of UI exhaustion. We also find that while participation in ALMP has a positive impact on the employment hazard, it has no effect on entrepreneurship. We speculate that this reflects the programs' one-sided focus on job search rather than job creation.