I actually think that you highlighted the wrong date: this paper was put online in June, received for review in July, approved in November, and published in Dec

I actually think that you highlighted the wrong date: this paper was put online in June, received for review in July, approved in November, and published in December. June version: http://ftp.iza.org/dp13319.pdf http://ftp.iza.org/dp13319.pdf