Failure to notify an employer as required by Section 409.001(a) relieves the employer and the employer's insurance carrier of liability under this subtitle unless:
(1) the employer, a person eligible to receive notice under Section 409.001(b), or the employer's insurance carrier has actual knowledge of the employee's injury;
(2) the division determines that good cause exists for failure to provide notice in a timely manner; or
(3) the employer or the employer's insurance carrier does not contest the claim.