Yes, there are laws known as "whistleblower" laws which protect those that "blow the whistle" on their employers for violating the law.  Generally these are OSHA related laws (laws that deal with safety and health) but violating FDA and Health regulations works too.  Make sure that when you speak to them at the health department you let them know that you have already been threatened by your employer and you are fearful of retaliation.  You will be protected against discrimination (cutting hours) and being fired.  You may want to contact an employment attorney as well on the matter.  This way you are ready to fight back on all ends. Good luck to you.