If an employer fires an employee for an unlawful reason, this is referred to as wrongful termination and can lead to a legal claim. Under the Texas Education Code, contract employees are required to resign no later than 45 days before the first day of instruction for the school year.You can write a short and simple letter saying what you just said in your post. Don't cite chapter and verse, but don't sugarcoat your reason for leaving. Employment discrimination generally exists where an employer treats an applicant or employee less favorably merely because of a person's protected class. If you find other employment or resign before the effective date of separation, please notify your immediate supervisor or your HR designee. This is my take on it, from a very prejudiced standpoint: You have to submit a request to be released from your contract to the school board. The City of San Antonio provides equal access to jobs, benefits, and services for all employees and prospective employees in the workplace. Pennington had selected Rash as a residential contract manager in San Antonio,. Shiels approved the hire.