Is it discriminatory to pay 1 guy substantially more than I the lower tier female who has to do the majority of the work?

This is definitely something worth discussing with an employment/labor attorney. As my colleague noted, New York recently passed legislation...

What can I do when my employer fires me but won't pay me my last checks.

Speak with an employment/labor attorney to discuss your options.

Does she have a case?

You should speak with an employment/labor attorney. How many hours per week did you work?

Overtime pay?

The answer to your question depends upon the details of your job, and whether you are an "exempt" employee. You should call an experienced...

We are a small start up company having a hard time collecting for rendered services. I need a law firm to issue a demand letter?

Look for local counsel in NY to represent you and go after your debtors. You can use Avvo's "Find a Lawyer" feature.

Is it possible to get overtime wages that were never paid.... ?

What you are describing certainly sounds unlawful. You are probably owed 2X your unpaid overtime for the past 6 years, plus statutory fines and...

Is it part of my job to attend after working hours dinners my boss has for the department?

There's a good chance your employer is obligated to pay you for the time you spend at these dinners. He may owe you 2x the amount of the...

Boss forcing us to be on call weekends and holidays uncompensated ?

What you're describing is in all likelihood unlawful. A lot depends upon the nature of your job, but you may be owed up to 2X the underpayment,...

The short answer is that employees can generally sue their employers for unpaid wages, whether paid on the books or off.

I agree with my colleagues. Under the right circumstances, New York allows employees to sue for unpaid commissions. You may be owed as much as 2x...