Talk to a supervisor at the department. Also contact the State Attorney's Office as well. If you were a victim you likely do not need an attorney.

Never sign a resignation letter. Hire a WC attorney...

Demand to see a doctor. Get them to write up an injury report or do your own. Hire a WA state WC atty and or make a complaint with the State.

Yes you can buy the car but it ill have a salvage title. That's very bad unless you plan to just use the car for parts. If not, it will need to be...

WC will not pay you 100% of your lost wages. Seek a CA WC attorney for more info. ...............................................

Yes likely for the work performed and any costs expended. He/she may file a lien for what's called Quantum Meruit.

You will need to consult with a VA workers' compensation lawyer as all laws are state specific............................................

Yes but they likely have immunity which will make it extremely difficult to...

You should either hire a wage and hour attorney to sue for your paycheck or contact the Department of Labor.

You need to ask them to send you a copy of the refund policy. No lawyer would know...