Penalties for failure timely to admit or deny liability, as required by ยง 8-43-203(2)(a) are not available unless "the claimant is successful on the claim for compensation." McManus v. Industrial Claim Appeals Office, 81 P.3d 1074 (Colo.App. 2003); Racon Construction Co., v. Industrial Claim Appeals Office, 775 P.2d 61 (Colo.App. 1989); Wright v. Rocky Mountain Health, W. C. No. 4-596-946 (March 24, 2005). A claimant is "successful" on a claim if she establishes the respondents' "liability" for compensation. Smith v. Myron Stratton Home, 676 P.2d 1196, 1201 (Colo.