If I can prove my employer.....?

I've tryed several questions about my situation and former employer on this site and have always gotten good,straight answers.Here's another.In 2008 I was diagnosed with an aotric aneurysym.I was off work for 3 months but returned to work with restrictions.The job I was in was the most demanding job by far in terms of physicality and hours.Not long after I had returned to work a foreman,not mine,had informed my foreman that he had an easier,less stressful,less demanding job for me in another part of the job site that would be perfect for me considering my restrictions,health problems and would be less stressful and less hours.I only found this fact out because this other foreman,once again not mine ,had told me that he had informed my foreman.Not once did my foreman ever inform me of this other job.After 6 or 8 months back in the job I had previously held and several trips to the E.R. and hospital I was informed by my cardiologist,thoracic surgeon and family Dr. that open heart surgery to correct my problem was needed.I had the surgery in March of 2009 and returned to work once again in July of the same year.And once again was put back in the physically demanding,long hour job that I held previously.Only this time when I returned my foreman informed me that if he could find any less stressful and demanding jobs that "he would see what he could".After a couple of months or so a job,which was mostly sedentary, opened up in my company and i wasnt informed by my foreman.This position was filled,by my foremans son.After another year or so and numerous more trips to the E.R. and hospital and my employer not being able to "accomodate my restrictions" i was forced to quit.My human resources department told me they could give me short term disability for nine weeks at 50% of my wages,which actually was only about 30% of my wages ,which is another story.They also informed me that after the 9 weeks was up I "would be on my own".This isnt a union job and I relize that employers can pretty much do what they want..But can they romise to find me something easier and then not inmform me of openings or hire "thier sons" to fill these positions?y the way the job my foremans son was hired for was his first with the company.At the time he was hired been with them for 9 years.