admit or deny liability had already been triggered by the claimant’s filing of a workers’ compensation claim in March 1989.
Moreover, we do not agree that prior requests from IBM for reimbursement of claimant’s medical expenses was sufficient to trigger the notification duty under 8-53-102(1). We note that § 8-52-107 does not authorize, or even mention, reimbursement for medical expenses; hence, there is no basis for holding that an employer’s request for reimbursement of medical costs is equivalent to actual notification or knowledge of a lost time work injury. Such an interpretation of § 8-53-102(1) would be tantamount to judicial legislation. If the notification provisions under § 8-53-102(1) are inadequate in cases in which the employer has a wage continuation plan, the remedy lies with the General Assembly, not the courts. See Campion v. Barta Builders, supra.
III.
Next, we address whether claimant suffered an accidental injury or an occupational disease. At hearing, this issue was considered to be determinative of the claimant’s average weekly wage for purposes of computing her temporary disability benefits. Because it was so considered, claimant argues that the ALJ erred in concluding that she sustained an accidental injury. We do not agree that this issue is determinative of the claimant’s average weekly wage, but we do agree that the record fails to support the conclusion that claimant’s injury was accidental.
A claimant’s average weekly wage is based upon his or her wages “at the time of injury.” Section 8-42-102(2), C.R.S. (1992 Cum.Supp.). However, in cases of occupational disease, the “time of injury” is generally held to be the time of last exposure or onset of disability. Henderson v. RSI, Inc., 824 P.2d 91 (Colo.App.1991).
Here, both the Employer’s First Report, prepared by the IBM physician, in April 1979, and the claimant’s own claim for compensation, filed in March 1989, identified the claimant’s injury as a “repetitive motion” strain and irritation of the ulnar nerve. Claimant told doctors and subsequently testified that, in February 1979, she felt an electric shock-like pain radiate from her upper right arm into her fingers. Within a month she was experiencing similar pain in her left arm.
Claimant initially was diagnosed with ulnar nerve entrapment in both arms, a condition which her doctors attributed to “heavy and repetitive use of her arms” in her work as a chemical processor. Her medical records between February 1979 and November 1989 are replete with references to “repetitive” motion/strain and to medical restrictions limiting the claimant from performing repetitive arm motions.
In finding that the injury was accidental rather than occupational, the ALJ relied on the fact that the injury could be traced to “a particular place and time.” However, the factors of time and place do not adequately differentiate between accidental and occupational injuries.
The ALJ omitted a third criterion, namely, the cause of injury. The traditional test for distinguishing between accidental and occupational injuries is whether the injury can be traced to a particular time, place, and cause. See Colorado Fuel & Iron Corp. v. Industrial Commission, 154 Colo. 240, 392 P.2d 174 (1964); Martinez v. Industrial Commission, 40 Colo.App. 485, 580 P.2d 36 (1978).
Here, the evidence was uncontroverted that the cause of claimant’s injury was heavy and repetitive use of her arms in performing the functions of her job. Because the injury resulted from the conditions of her employment, rather than a specific accident or trauma, the injury is an occupational disease within the meaning of § 8-40-201(14), C.R.S. (1992 Cum.Supp.). See IML Freight, Inc. v. Industrial Commission, 676 P.2d 1205 (Colo.App.1983).
The fact that an occupational disease becomes acutely symptomatic does not ipso facto transform it from a disease into an accidental injury. See Masdin v. Gardner-Denver-Cooper Industries, Inc., 689 P.2d 714 (Colo.App.1984); see generally 1B A. Larson,