C.R.S. § 8-41-208

(1) The exposure to or contraction of hepatitis C by a firefighter, emergency services provider, or peace officer, as described in section 16-2.5-101 , C.R.S., shall be presumed to be within the course and scope of employment if the following conditions are satisfied: (a) A baseline test shall be provided by the employer, or if insured, by the insurer, to be performed within five days after the employee reports the on-the-job exposure. The employee must report the exposure within two days after the employee knew or reasonably should have known of the exposure; (b) The baseline test establishes that the employee was not infected with hepatitis C at the time of the on-the-job exposure; (c) The employee complies with reasonable and necessary medical procedures set forth in section 8-42-101 (1)(c); (d) The employee is determined to have hepatitis C within twenty-four months after the on-the-job exposure to the known or possible source. (2) The exposure to or contraction of hepatitis C by a firefighter, emergency services provider, or peace officer, as described in section 16-2.5-101 , C.R.S., shall not be deemed to be within the course and scope of employment if an employer or insurer shows by a preponderance of the evidence that such exposure or contraction did not occur on the job.