“The Impact of Colombia’s Pension and Health Insurance Systems on Informality,” by Valentina Calderon-Mejia and Ioana E. Marinescu (Discussion Paper No. 6439, March 2012, .pdf format, 43p.). Note: Links to the abstract and full-text can be found at:
www.iza.org/en/webcontent/publications/papers/viewAbstract?dp_id=6439