Relating to admissibility of certain evidence against employers for employee use of THC.

HB 196 creates new rules for evidence in civil negligence cases where employers are sued over employee THC use. It prohibits courts from admitting evidence of an employee's *medical use of low-THC cannabis* (per Texas law) unless the employer knew about the use, was aware the employee was intoxicated, and failed to act. It also blocks using a positive THC test alone as evidence; additional proof of intoxication at the time of injury is required. This directly affects employers facing lawsuits alleging negligence related to employee THC use. The law applies only to cases filed after its effective date.