There is a new category of discrimination suit being brought in the United States, known as Family Responsibilities Discrimination, or FDR. The plaintiffs are mostly parents and mostly women, but about 10 percent are men, and some are caring for spouses or parents, not children. All are claiming discrimination at work because they are giving care at home.
See "The Workplace: The job or the family? Part-timers fight for both", Lisa Belkin, International Herald Tribune, July 31, 2006