HB 3319 allows certain counties with a population exceeding 3.3 million to establish a constable’s department civil service system. It outlines procedures for adopting such a system through either an employee petition and election or direct establishment by a commissioners court. The bill creates a civil service commission responsible for setting employment policies, conducting examinations, overseeing promotions and disciplinary actions, and ensuring due process for employees. It also introduces procedures for temporarily suspending constable department employees under felony indictment or misdemeanor complaint and grants the commission authority to issue subpoenas and administer oaths. Additionally, the bill criminalizes noncompliance with subpoenas issued under this system and allows employees to appeal disciplinary actions to district court​.