If I heard or observed a car accident, am I considered "involved" and must remain on the scene or can I leave the scene?

If you saw the collision, then you are a witness. Though you should if you can, being a witness does not require you to remain at the scene.

It depends. Absent non-compete or non-solicitation agreements, a former employee can compete and hire former co-workers. But stealing trade...

Coworker wrote demand letter for stopped payment check ,got left on company copier ,another coworker found ,gave to coworker

More facts are needed. But the posted facts do not give rise to liability.

Can i sue for emotional distress and loss of income?

Emotional distress is not a recoverable element of damage in a Texas breach of contract case. But the loss of income, subject to proof, would be.

Can a dealer change contract after bank approved ?

Typically, a contract cannot be unilaterally modified. You need to contact a consumer lawyer right away.

Why is the dealership adding my deductible from an insurance claim to my service bill?

The deductible is the amount of the loss you agreed to be responsible for when you bought your insurance contract.

What are the statues of limitations in texas for return of personal property (jewelry)?

The most appropriate claim is conversion which has a two year limitations period.

Can I file a police on someone who rear ended me and his insurance company can't seem to locate him

I do not understand what you mean by "file a police." If you mean file a crash complaint, yes you can. But that will not pay for your injuries or...

Mileage discrepancy

Was it a material discrepancy? That is, was it a few hundred miles or tens of thousands of miles, enough to affect the vehicle's value. Do you...

What my best option ?

Stop stealing. Stop posting. Get a criminal defense lawyer with juvenile experience.