Employer terminated the client's services, how does the noncompete clause work now?

As a general proposition, it does not matter who terminates the agreement, unless the language of the agreement specifies otherwise. You would do...

While unjust enrichment is technically an equitable cause of action, if the remedy you are seeking is money damages, the district court can hear...

It depends on who the parties are, for starters. If this is outside the medical context, which requires all contracts be signed, the party who is...

I would like to know if I can sue a ex-co-worker for slander, defamation of character, etc.

The other two responses are correct: you probably don't have a claim for wrongful discharge. As to libel/slander, my advice to individuals is...