Loss of job due to inability to work with a hostile employee

I was recently released from my position in customer service. I had not quite been with the company for a year. My direct supervisor had made for a "hostile" work environment. The owner was very aware that she mistreated fellow co-workers, but, as he states, "because she has been with the company for an extended period of time, knows her job & does it well, it would be easier to replace your position than hers." He also stated to me upon my dismissal (effective immediately, he had put my position in the classifieds 4 days prior)that I was the 5th person in the last 5 years to either quit/ be let go because of the hostility of my supervisor. I was also told the release was not based on job performance, simply that I couldn't get along with/communicate well with her. Because of the strenuous work environment, I have had loss of sleep, irritability, depression & anxiety. Although I had previously had these conditions, they were under control of medication & I had to seek further treatments because of the stress there. Am I entitled to compensation?