i am a emplyee in texas with a contract . I am a salaried emplyee that has taxs taken out. I have just turn in my resignation and they say I can't qui

An employee cannot be required to work continue to work for his a private employer after he quits.  However he may forfeit some benefits (for example, payment for accrued and unused sick leave) if he quits without notice.  Also, if you have a written contract you should read it or show it to an attorney who may be able to explain if there are other consequences.