Pension Reform Retirement ages, and labour Supply in the United States and the european Union(EU15)19502060 Christian Toft, Edward Whitehouse, and gary burtless Beijing Normal University China Wednesday 22 May 2013 U N I KASSEL VER SIT ATPension Reform, Retirement Ages, and Labour Supply in the United States and the European Union (EU15) 1950-2060 Christian Toft, Edward Whitehouse, and Gary Burtless Beijing Normal University, China, Wednesday 22 May 2013