Is it legal to pay an employee entirely in rent credit?

I agree with the above attorneys. Your friend should contact an employment attorney who handles wage and hour litigation as soon as possible.

Do I have a discrimination and/or wrongful termination case?

There does not seem to be a discrimination case based on what you wrote, but I would consult with an attorney to go over the facts in greater detail.

Can a employer take money out from a teenage employee by taking sign or can the employer put an employee in a contract??

I agree with the other attorneys. It is impossible for us to say unless we had a copy of what you signed. I would ask your employer for a copy.

As indicated above, it depends. If the appointment is related to a disability that your employer is aware of, it could be disability...

Can co-workers be told another employee is about to be fired but the soon to be terminated employee not informed yet?

Absent a contract or written agreement saying otherwise, while what your employer did not not fair, it is not illegal.

Can i sue for being in a hostile /,physical alercations and verbal abuse and sexual harassment??

You should contact a local employment attorney as soon as possible to go over your circumstances in greater detail and to discuss your options. ...

Sexual harassment in the work place?

You should speak with a local employment attorney as soon as possible to discuss this matter further and to bring a claim against your employer.

Can an employer force me to take unpaid time off due to lack of business?

As long is it is not for a discriminatory reason (due to your race, religion, etc.) your employer can change or cut your hours.

Is it illegal for a company to allow me to work in italy while my legal residence is in NY?

It sounds as if you need an Italian attorney to assist you with this.

Is it legal for my Employer to lower my employment pay from $13 hour back to $10pr hour starting rate after 15yrs of employment?

Unless you have a contract, your employer can reduce your pay for any reason, so long as it is not a discriminatory reason (i.e. due to your race,...