i was physically attacked by my employer,his wife and his son at the same time while on the job. what are my rights?

You have the right to take both civil and criminal action for assault and battery.  There may be other actions as well depending on the extent of your injuries and why the employer took these actions against you.  you should first consult with a private attorney before you make a criminal report as the attorney may have specific things he/she wants you to do when you go to the police.