Is it illegal for employers to hold paychecks of employees in order to attend in-services?

Absolutely illegal. You should demand your paycheck immediately and, if not paid out immediately, your next call should be to an employment attorney.

My paycheck bounced due to insuf. funds on my employers end. What are my options? They won't respond to email or phone calls!

You should contact an employment attorney immediately, as you are likely protected by a wage theft statute and/or a fraudulent check statute.

Is an employer allowed to keep a first weeks paycheck till you either quit or terminated?

Based on the facts you've listed here, no, he is absolutely not permitted to do that. You should consult with an employment attorney immediately if...

I was recently subpoenaed to testify for a matter related to work, is my employer required to pay me for my day of missed work?

Sadly no, lay witnesses are only required to be paid a small statutory fee (federal is $40 and Florida is $5) and reimbursement for mileage....

Florida is a right to work state?

I'm sorry to hear about your experience. The starting point for your inquiry is what your goals are. Negative employment references are typically...

What can I do about this?

Contact a lawyer immediately. You have a remedy both for your final paycheck as well as for his check fraud violations. You are also likely...

Can I record my employer conversations if there is a sign on the front door stating to everyone that they are being recorded?

Not necessarily, as Florida is an all-party consent state. While the sign might indicate that, by entering the store, you are consenting to them...

Can I sue for retaliation?

I would strongly recommend that you speak with an employment attorney. Most offer a free initial consultation. There are a number of troubling...

This sort of issue involves the cross-section of several different state and federal laws, and it would be hard to give you a definitive answer...

In the state of florida can my employer charge me rent to live on job site?

The short answer is, yes, they can charge you for housing. However, the real question is how much can they charge you, and how they can charge you....