What are my rights when an employee for security at a museum shows coercion and aggressive behavior against an outside vendor?

If you believe this treatment was motivated by a discriminatory animus, there might be a claim that can be pursued. Beyond that, your recourse is...

Employee discrimination?

You should consult with a local employment attorney. You may have a claim, but these claims are very fact specific, so more information would be...

An employee goes on short term disability to enter a rehab program, legally does the employer have to hold a job open for them?

If the lay off is a genuine reduction in force due to financial issues, then it is legal. If it is just being done to this employee as a pretext...

What should I do if my credit card go missing or are stolen at my “job”?

Beyond reporting the theft to HR and cancelling the card or reporting it stolen and getting a new one issued, there is not much more you can do.

Can my boss withhold my pay to chip in for office furniture as well as annual christmas party?

I would contact the Department of Labor ASAP.

It is hard to answer this definitively one way or another, unfortunately.

How can I report a sexual offense without having my name tied to it?

You can report your concerns to the police and request that you be kept anonymous.

If your employer requires that you effectively are "on call" during your off hours, they have to pay you for that time.

What can I do when a client chooses to not return home on time and pay me for dog sitting?

You can bring a suit against them for non-payment of any work you perform that they do not pay you for. Beyond that, if you did not agree to cover...

How would my case fall under a class?

If the harassment was just due to a personality conflict and/or bullying that flowed from that, there isn't a class that you would fit into to...