2016 CO 25
Colo.2016Background
- Jeffrey J. Christ, a Littleton firefighter hired in 1987, was diagnosed with glioblastoma multiforme (GBM) in 2007 after >20 years of service; he had a pre-employment physical that did not include brain imaging.
- Christ (and later his widow and child) claimed workers’ compensation benefits under Colorado’s firefighter statute, § 8-41-209, which creates a presumption that certain cancers of qualifying firefighters result from employment if a prior physical showed no evidence of the disease.
- Littleton (the City and its insurer) invoked § 8-41-209(2)(b) to rebut the presumption by presenting medical experts who testified that known firefighting carcinogens do not cause GBM and that ionizing radiation is the only established environmental risk for glioma.
- The ALJ applied the statutory presumption but found Littleton met its burden by a preponderance of medical evidence showing Christ’s GBM did not arise from occupational exposures and denied benefits; the Panel reversed, then the court of appeals affirmed the Panel (2–1), siding with a broad view of the presumption.
- The Colorado Supreme Court granted certiorari to decide the scope and rebuttal burden of § 8-41-209 and whether the court of appeals erred in overturning the ALJ’s fact findings; it ultimately reversed the court of appeals and reinstated the ALJ.
Issues
| Issue | Plaintiff's Argument (Christ) | Defendant's Argument (Littleton) | Held |
|---|---|---|---|
| Nature of § 8-41-209 presumption (rebuttable vs irrebuttable) | Statute creates a legislative declaration / effectively irrebuttable presumption that listed cancers are work-related for firefighters meeting requirements | Statute creates a substantive rebuttable presumption that shifts burden to employer to disprove job-relatedness by preponderance of medical evidence | Presumption is substantive (shifts burden of persuasion to employer) but not conclusive; it is rebuttable under § 8-41-209(2)(b) |
| Scope of proof required to rebut presumption (general vs specific causation) | Employer cannot defeat presumption by attacking general causation alone; must disprove all possible workplace causes or show specific alternative causation | Employer may rebut by proving absence of general causation (work exposures incapable of causing the cancer) or absence of specific causation (claimant not exposed or more likely nonwork cause) | Employer may meet burden by proving lack of general causation or lack of specific causation by preponderance of medical evidence |
| Standard and quantum of proof for employer | Employer must exclude a wide and unspecified range of potential exposures (near-impossible burden) | Employer must prove by preponderance (more likely than not) that condition did not occur on the job | Burden is preponderance of the medical evidence (not an impossible or heightened standard) |
| Deference to ALJ on conflicting medical evidence | ALJ erred by finding employer met rebuttal burden because Panel and COA concluded evidence insufficient as matter of law | ALJ’s findings are factual and supported by substantial evidence; appellate courts must defer | ALJ's findings were supported by substantial evidence; court of appeals failed to defer and was reversed |
Key Cases Cited
- Hickerson v. Vessels, 316 P.3d 620 (Colo. 2014) (standard: de novo review of statutory construction)
- Anderson v. Brinkhoff, 859 P.2d 819 (Colo. 1993) (definition and scope of "occupational disease" limits compensable conditions)
- Mile High Cab, Inc. v. Colo. Pub. Utils Comm'n, 302 P.3d 241 (Colo. 2013) (explains preponderance standard as "more probable than not")
- Norris v. Baxter Healthcare Corp., 397 F.3d 878 (10th Cir. 2005) (epidemiology as principal evidence of general causation)
- Davison v. Indus. Claim Appeals Office, 84 P.3d 1023 (Colo. 2004) (ALJ’s factual findings on causation are owed deference if supported by substantial evidence)