I came across this video done last year by New Spark Media. 

Basically, a living wage, which is generally above the legal minimum wage, is the amount needed to attain a certain standard of living, usually enough to be above the poverty line and to be ineligable for public assistance.

Several years ago, as an undergraduate at Bucknell University I remember that student groups were rallying for our food services and maintainance staff to receive a living wage.  If anybody has stories to share about similar campaigns that happened or are currently happening at their colleges or universities, please post them.