Typically when you come back from workers' comp and short term disability injury, you should be given back the position you had before you left, incluging the same wage. The same holds true for FMLA as well, however FMLA is only for a maximum of 12 weeks. Maybe this is why your employer insisted that you take it instead of workers comp knowing that you would be out for lonfer than 3 months. At this point, you should consult directly with an employment law attoreny. After hearing all of the facts of your case, they can best advise you further.