According to this article in the latest Mckinsey Quarterly quoting a 2009 Swedish Study by Nyberg et al. having a bad boss can be really bad for your heart.

Now I’ve known from experience that bad bosses are well, bad.  Bad for the business, bad for staff, bad for customers.  But I hadn’t realised until I read these articles that bosses bad behaviour can actually be lethal.

Better check those corporate insurance policies.