Tex. Ins. Code § 4151.256
An employer who enters into a contract with an insurance carrier under Section 2053.202(b) may not use or contract with an administrator to perform administrative services in connection with workers' compensation benefits unless the administrator has entered into a written agreement with the insurance carrier that:
(2) provides that the insurance carrier is responsible for:
Added by Acts 2007, 80th Leg., R.S., Ch. 1176 (H.B. 472), Sec. 1.20, eff. September 1, 2007.