Tex. Ins. Code § 1253.057
(a) A policy may provide that, during the period of a work stoppage, each individual premium rate shall be increased by an amount not to exceed 20 percent of the amount shown in the policy, or a greater percentage as approved by the commissioner, to provide sufficient compensation to the insurer to cover increased:
Added by Acts 2003, 78th Leg., ch. 1274, Sec. 3, eff. April 1, 2005.