what action do take if may employer doesn't pay me overtime or my commssion pay that do

You can take both of these claims to a private attorney or if you are an employee (as opposed to an independent contractor) then you can take the commissions claim to the Texas Workforce Commission - Labor Law Department (www.twc.state.tx.us/ui/lablaw/texas-payday-law.html) and the overtime claim to the Wage & Hour Division of the U.S. Department of Labor (www.dol.gov/whd/america2.htm#Texas).  If you choose to retain a private attorney, you should consider one who is Board Certified in Labor & Employment Law by the Texas Board of Legal Specialization.  See your local yellow pages or www.tbls.org.  You should also ask the attorney if he or she represents employees before disclosing any of the facts of your situation.