Husband supervising wife, husband fires wife! Wrongful termination comes to mind. Then sexual harassment, given the supervisory position. Then divorce, you know where you take half of what is his! I would guess him to be penny less, out of work, and very lonely in the near future!
If you mean from a job as a co worker then do not take it personal just talk with him. if you mean marriage and you love him I know the pain is tuff but give him some time to cool and think what he has done after one year you will feel a little better but if he dose not come back start accepting he is gone and go on with your life look into child support if there is children and go for alimony.