I worked in a major pharmaceutical company's call center for a couple months after being laid off - it was probably the worst job working for the worst company I have ever had, but it paid the bills. Anyway, their HR department screwed up their paperwork when entering me as an employee and had me down as a female. When I asked them to correct it I was informed that it was more hassle then it was worth and to just live with it ... I promptly filed for maternity leave and they promptly fixed their error.
One of the many stories I have of that company that just blew my mind.