ers v. Indus. Claim Appeals Office, 914 P.2d 501, 506 (Colo.App.1995) (ALJ has broad discretion to determine the admissibility of expert testimony, and appellate courts may not overturn a ruling unless it is manifestly erroneous).
Claimant urges that the testimony was relevant because employer's vocational expert relied on the FCE and the ALJ adopted both the treating physician's restrictions and the recommendations of the FCE, finding that they were consistent. Claimant further asserts that employer's objection to the testimony estopped it from later seeking to have the ALJ consider the FCE. However, the ALJ did not limit questioning regarding the FCE and the only offer of proof was claimant's explanation that the testimony would show that employer would not authorize a follow-up visit to the treating physician.
Under these cireumstances, we fail to perceive how the question made it more or less likely that the treating physician did or did not agree with the recommendation of the FCE. Therefore, we are satisfied that the ALJ acted within his discretion in sustaining employer's objection to the question on the grounds of relevance and determining that employer was not estopped from seeking consideration of the FCE.
IV. Right to a District Court Hearing
Claimant next contends that she did not expressly waive or surrender her common law rights and was entitled to bring a claim in the district court. She also contends that portions of the Workers' Compensation Act are unconstitutional. We disagree.
An injured worker's exclusive remedy for injuries that arise out of or in the course of employment is recovery under the workers' compensation statutes. § 8-41-10%, C.R.S. 2008; Pizza Hut of Am., Inc. v. Keefe, 900 P.2d 97, 100 (Colo.1995). The Act, and specifically its compulsory elimination of common law rights, has been repeatedly held constitutional. Kandt v. Evans, 645 P.2d 1300, 1306 (Colo.1982) (citing cases).
Thus, section 8-41-104, C.R.S.2008, which creates a conclusive statutory presumption of an employee's acceptance of coverage, has been upheld against constitutional attack, see Ryan v. Centennial Race Track, Inc., 196 Colo. 30, 32, 580 P.2d 794, 795-96 (1978), and it is not required that a claimant be given the option of consenting to a hearing and adjudication by an ALJ. See Dee Enters. v. Indus. Claim Appeals Office, 89 P.3d 430, 438 (Colo.App.2003).
A.
Claimant nevertheless asserts that, at common law, she had the fundamental constitutional right to a hearing in district court under Colorado Constitution article VI, seetion 9. She asserts that, because district courts have "original jurisdiction in all civil . cases, except as provided [in the constitution]," her right to such a hearing cannot be abrogated by a mere statute, but must be abrogated by another provision of the constitution itself or by an amendment thereto. We disagree.
Claimant is correct that, under the cited constitutional provision, the district court has original jurisdiction in civil cases. However, the constitution does not define the term "civil case." Instead, that term is left for the General Assembly to define. See People ex rel. Terrell v. Dist. Court, 164 Colo. 437, 443, 435 P.2d 763, 766 (1967) (the constitution does not define the phrase "criminal cases" in article VI, section 9; hence, the legislature has the power to define crimes); see also People v. Gilliland, 769 P.2d 477, 480 (Colo.1989) (while district courts have general jurisdiction over criminal cases, it is the constitutional prerogative of the legislature to define crimes).
A civil action is a judicial proceeding to enforce a private right. See Hernandez v. Downing, 154 P.3d 1068, 1070 (Colo.2007) ("a proceeding on the part of one person, as actor, against another, for the infringement of some right of the first, before a court of justice, in the manner prescribed by the court or law" (quoting Clough v. Clough, 10 Colo.App. 433, 439, 51 P. 513, 515 (1897), aff'd, 27 Colo. 97, 59 P. 736 (1899))).
Here, the General Assembly essentially has determined that workers' compensation