Can I get fired for being in a methadone program?

I would consult with an employment attorney. Your father may have a disability discrimination claim.

Is it legal to get fired from a company after you have already been hired and they find out after your on a do not hire list

Unless they did this due to your membership in a protected class (disability, gender, race, etc.), then it is legal.

Changed schedule for salaried employee.

As indicated above, your title does not matter. While more information is needed, it sounds as if you are performing a lot of duties that would...

An attorney have to review the term sheet in order to advise you properly.

Can i be reimbursed for working 13 hour days for $70 in nyc?

You should speak with an attorney as it sounds as if you have a claim for unpaid wages.

I used to worked with MTA New York CITY TRANSIT IN NYC they forced me to take the retirement due to age / harassment / my medica

Why did they harass you and how did they force you to retire? If they did this to you because of your membership in a protected class (age, race,...

Is there any lawyer that defends employees with employment matters with metropolitan transportation authority?

You should use the find a lawyer tab on this website.

Is this legal ?

I would contact an employment attorney. If the offer letter is not binding, or does not state what your duties have to be, it is likely that they...

Can I ask my job for damages if they haven’t paid me 47 hours they owe ?

It certainly sounds like you have a claim for unpaid wages. I would contact an attorney, or the New York Department of Labor, Wage and Hour Division.

How should i proceed if i want to take the legal action against the previous owner of the resto. New york

It may come down to what the written agreement says, but I would contact an attorney to discuss your options.