If interest does not vest until a year, then should probably wait the year.

Is it legal to deny some employees paid holidays when the entire rest of the company receives this benefit?

You need to have attorney look at new contract and your employment classification.

Keep an record of all the docketing and paystubs.

Your options also depend upon what your job function and duties enatil, and if a reasonable accommodation could be provided that would not cause an...

Do u have to sign a new contract?

This sounds like an teaching job. You have a right to enforce the contract as is. Don't sign the contract if you do not agree with the new conditions.

My neighbor put cameras along the property line looking into my yard

You may want to also file a police complaint.

Besides an employment lawyer, what kind of lawyer do I need if I have a case?

I think you asked this question already. But if you already received right to sue letter, you need to find an attorney asap. As you only have 90...

Can me and my spouse apply for Visa on original approved petition without taking any action on current H1 amendment denial?

You should not travel outside the USCIS while your status is in flux.

Can you please clarify my queries if he can go for stamping with the primary applicant approved petition?

He should to stamping. He has nothing to lose by going with him

Depending upon work sought may want to seek sponsoring individual for employment visa i.e. H1B