Can an employer refuse return to work after two heart attacks?

Sounds like you work for a medical center or hospital.
They need to get you stronger so that you can’t stand up and do your job and that’s what they are.
I hope they will find a job that you could do sitting down
I’m sure you are very talented and have a lot to offer the place you are working so if you can talk to someone in your department or your manager and ask them what the procedure is for you to get back to work.
I wish you the very best

This is where you go to the 'other' side of your employment equation and deal directly, forthrightly, honestly, and legally, with them. We can't answer this unless we know the laws where you live, we don't know of your relationship with your employer, we don't know if your employer still needs you, or even likes you, and we don't know in what condition you're ever likely to return to work and be good again...able to handle stresses, difficult conversations, have proper dexterity, visual acuity, and stamina.

I don't mean for this to be a rebuff. I mean you'll get it directly and matter-of-factly seated with your employer. After all, he/she has needs too, they have to run a viable business with other employees they'd like to keep happy and motivated to stay with them. Can they do that and have you away for another month, two, six?

This is an appalling story, but it was related to me by my late father, a very successful mining engineer who made many people rich by his problem-solving over his lengthy career: His maintenance superintendent came to him and asked my father for a three month furlough so that he could go to Saskatchewan and help his brother, a farmer, who badly needed his help that hear. My father, ever conscientious about why he earned his pay, replied, 'Ivan, if I don't need you for three months, I don't need you.' Yes, that is appalling, but it was a business decision, one that had to be made clear and plain for the sake of the operation, which is where this conversation took place....in the midst of a multi-million dollar mining operation that employed 300+ men and women.

This is why my advice is to contact your employer and deal brutally honestly with them. They are going to be that way with you when the chips are down, so get it 'from the horse's mouth.'

You might check into short term disability depending how long you have worked.

Hi @wewire2014, welcome to Mayo Clinic Connect. Having two heart attacks and then being off work for two months is a lot to deal with, especially when you’ve used your leave and need to get back to work.

I can understand why stopping the treadmill stress test because of fatigue would leave you wondering whether that could affect your return to work. Your cardiologist would be in the best position to explain what the stress test and echo results mean for you and whether you are medically ready to return to your job. I agree with others commenting, and your employer may also have specific requirements for returning after a medical leave, particularly depending on the physical demands of your work.

Has your cardiologist discussed your test results with you yet or told you whether you are cleared to return to work? Has your employer told you what medical clearance or documentation they need before you can return?