You should speak with an employment law attorney. It is not clear that FMLA would offer much help--among other things, it only covers days out for medical treatment or being under a doctor's care (not simply for being "sick") and has some other limitations which limit its applicability to chronic conditions. That said, you need someone knowledgeable to review your wife's condition in detail against the law, to see what protection it does offer. Also, if your wife's condition is a chronic one, it may possibly be considered a "disability"; if it is, then the employer may not harass her on the basis of it, and must also make reasonable accomodations to her medical needs. Therefore, you also want knowledgable counsel to evaluate whether your wife's condition would qualify as a disability, since if it does, that may offer her expanded protection. Good luck.