We had a lengthy discussion about the maternity leave here
http://smnetwork.org/forum/index.php/topic,6390.msg39463.html#msg39463and some of the same case can be made about family leave.
We are a different industry then the rest of the world.
Let's take it out of context
Let's say a costume designer had a family emergency and couldn't do three weeks of fittings or tech . . . how can the job be held for them? Can they show wait?
We are a time based position (we have to get the show open in time, we have to perform a show at 8:00p) - we don't have some of the same flexibility as other industries.
Our entire career is a free-lance, temp, contract employees, and we do not get the same benefits as other types of full-time, regular employees.
There is a trade off, and often it is not in our favor.