Your employer is not permitted, under law, to fire you on the basis that you filed for bankruptcy. Your employer is also not permitted to change your job or contract. Your salary cannot be reduced, you cannot be demoted, and responsibilities cannot be taken away.
It’s important to understand, however, that while you could potentially have a discrimination suit if you are fired because you filed bankruptcy, you are not completely protected. Like many other states, Florida has “at-will” laws that allow an employer to fire employees without proving cause, so long as they aren’t directly discriminating against someone because of their protected status. If your employer has another valid reason to terminate you, it could be justified using other reasons than your bankruptcy.