What are my options? Can I sue my employeer?

There is more information that will be required to fully answer your question. However, the conduct you described violates Washington law. You...

What happens if a company is supposed to pay a certain percentage as commission and dont?

The conduct that you have described violates several wage and hour statutes. Both your boss and the company may be liable for the unpaid wages,...

Is there any law that states employers need to pay their employes on time?

Yes. there are statutes that require the timely payment of wages earned.

Certified mail

Not typically. There is a specific rule that must be followed to do so.

On reconsideration, the Court should not allow the evidence unless the other sid ecan show that it was discovered after the trial and could not...