If you're interested in this subject, ZeroHedge has been compiling some very useful data regarding employment. Here's a link to two graphs that show the "age skew" at play in hiring for the past several years:

http://www.zerohedge.com/sites/default/files/images/user5/im...

http://www.zerohedge.com/sites/default/files/images/user5/im...

Full article:

http://www.zerohedge.com/news/2014-10-03/hiring-grandparents...