Hi, if I was hired to work 9/6 an I end up working 7/6an not getting paid for the extra time am I due extra pay.

Depends.  If you are paid by salary and you fit into one of several exemptions from overtime, you are not due any extra compensation for additional hours. If you are paid hourly, you are entitled to be paid for every hour worked and overtime for every hour over 40 in a single week. Contact the US Department of Labor, Wage & Hour Division or the Texas Workforce Commission, Labor Law Department for more information.