Can a company fire you while you're on vacation?

Contact your boss. I doubt you can get hired in the other stores if you are listed as terminated.

Can I sue my employer for not paying me?

You can file a complaint with the NYS Dept of Labor, Labor Standards Division whether it was cash or not. You can find info on their website. But...

Is the mere verbal threat of suspension or firing from a job (without legal merit) a basis for a lawsuit?

It depends on what you want the attorney to accomplish and how much you are willing to pay a lawyer to try to get the result you want. If you are...

Arbitration

Arbitration is intended to be a quicker legal process than going to court. For that reason, unless something unusual happens, the decision is...

Is there any recourse for this situation?

No, but if they need you, you should try to negotiate a severance package where they pay you extra if you agree not to leave before a certain date....

No, but if you can contact him, you should let him know what he did to you. But other than apply for unemployment from the date you were...

Can i keep my apartment?

If you paid for the apartment, you are a tenant. Consult an employment attorney. They will probably offer you severance pay to leave. If it is...

Can I get unemployment?

If you are not hired at the new job, and your doctor writes you a note that you cannot do physical work, only light duty, probably.

Which address we should write on N-400 Part 6(B) for the employer, the address on W2 or address of the physical work location?

Need to contact an accountant. Possibly a tax attorney.

Yes. The issue about scoliosis has already been litigated and NYPD lost that case. There are short time limits for filing an appeal, so you need...