Notarization is just a guarantee that someone's signature isn't a forgery. But notarization doesn't make an otherwise unenforceable agreement...

Not seeing a legal issue here. They gave you a chance at another job and your declined it. You aren't entitled to a job for life or to a lateral...

Do you have a written agreement or not-hard to tell by your question. If you do the terms will dicate. Also, how much work did the person do and...

Yes but check with an attorney in your state and best of luck..............................................................

If you had an issue three years ago you should have addressed it then. Get a lawyer in your area and best of luck.

Take your agreement to a local lawyer and have him/her review it and advise you on how best to proceed.

Nothing. Get better to where you can do the job and then re-apply for the position. Sounds like you can't lift the required weight.

Check with a lawyer in your state to see if you are a one-party or two party consent for recording conversations.

You could always find another job. Check with a lawyer in your state but I would say yes you have to sign it.

Not sure why you are asking in here and not your own lawyer. Lots of moving parts here but not something anyone in here can answer.