No you can't sue your employer for the month-long suspension, because--since all employment is "employment at will" (unless you had a written contract to the contrary)--your employer had the legal right to suspend you for as long as they like. You can't sue people or businesses for doing things they had the legal right to do.If they do not put you back on, apply for unemployment: an indefinite suspension may not be called termination, but it is the same thing as being terminated, and if they won't recall you, you should be eligible for unemployment benefits. And look for a different job.