In many states, an employee’s accrued, but unused vacation time must be paid on termination of employment.  However, under longstanding Texas law, an employee is not entitled to be paid for accrued, but unused vacation, on termination of employment unless the employee has a written agreement with the employee to do so or employer has a specific written policy that it requires vacation be paid on termination.  

The Texas Payday Act defines "wages", in relevant part as "vacation pay, holiday pay, sick leave pay, parental leave pay, or severance pay owed to an employee under a written agreement with the employer or under a written policy of an employer."  Therefore, vacation pay (and holiday, sick or parental leave pay for that matter) that is not paid under a written agreement or policy of the employer that provides that unused vacation is paid on termination does not constitute wages under Texas law and is not required to be paid on termination.