24CA0754 Nichols v ICAO 01-30-2025
COLORADO COURT OF APPEALS
Court of Appeals No. 24CA0754 Industrial Claim Appeals Office of the State of Colorado WC No. 5-228-938-002
Janell Nichols,
Petitioner,
v.
Industrial Claim Appeals Office of the State of Colorado and State of Colorado Department of Public Health & Environment,
Respondents.
ORDER AFFIRMED
Division III Opinion by JUDGE BERGER* Dunn and Tow, JJ., concur
NOT PUBLISHED PURSUANT TO C.A.R. 35(e) Announced January 30, 2025
Boesen Law LLC, Bradley Unkeless, Greenwood Village, Colorado, for Petitioner
No Appearance for Respondent Industrial Claim Appeals Office
Philip J. Weiser, Attorney General, Tina R. Oestreich, Assistant Attorney General, Denver, Colorado, for Respondent Colorado Department of Public Health & Environment
*Sitting by assignment of the Chief Justice under provisions of Colo. Const. art. VI, § 5(3), and § 24-51-1105, C.R.S. 2024. ¶1 In this workers’ compensation action, Janell Nichols
challenges a final order of the Industrial Claim Appeals Office
(Panel) denying her claim. We affirm.
I. Relevant Facts and Procedural History
¶2 The following facts are undisputed. Nichols, a trained
epidemiologist and infection preventionist, worked for the Colorado
Department of Public Health and Environment (CDPHE) as a
Prevention Unit Manager. She worked mainly at a computer,
performing data and research analysis, and drafting documents.
¶3 On May 12, 2014, Nichols reported a work-related injury to
CDPHE, pursuant to the Colorado Workers’ Compensation Act (Act),
§§ 8-40-101 to -47-209, C.R.S. 2024. Specifically, Nichols
complained of pain, numbness, and tingling in her wrists and
fingers. Nichols visited two physicians in 2014 and received varying
diagnoses. Dr. John Aschberger diagnosed Nichols with “very mild”
carpal tunnel syndrome (CTS) in the right wrist only. Dr. Edmund
Rowland diagnosed her with “probable carpal tunnel syndrome on
both sides.” Neither physician opined as to the cause of Nichols’s
symptoms. Nichols concluded her medical treatment that year,
without filing a claim for compensation under the Act.
1 ¶4 Approximately eight years later, on October 24, 2022, Nichols
again reported an injury to CDPHE. In that report, Nichols
complained of CTS in “both wrists,” with increased pain and
numbness in the left. Multiple physicians evaluated Nichols. She
received diagnoses of bilateral CTS, median neuropathy, lateral
epicondylitis on both sides, and left cubital tunnel syndrome.
Nichols made a formal request for compensation under the Act,
which CDPHE contested, and the matter went to a hearing before
an administrative law judge (ALJ).
A. The ALJ’s Order
¶5 The ALJ reviewed evidence related to (1) Nichols’s claim that,
beginning in 2022, her job aggravated her pre-existing CTS and
therefore entitled her to compensation under the Act; and
(2) CDPHE’s affirmative defense alleging that Nichols failed to timely
file her claim under the limitations period that section 8-43-103(2),
C.R.S. 2024 prescribes. Following the hearing, the ALJ issued an
order denying Nichols’s claim and also denying CDPHE’s affirmative
defense. The ALJ found by a preponderance of the evidence that
Nichols timely filed her claim but failed to meet her burden of
demonstrating that her job caused her symptoms.
2 ¶6 In ruling on CDHPE’s affirmative defense, the ALJ noted that
the two-year limitation period begins “when the claimant, as a
reasonable [person], should recognize the nature, seriousness[,] and
probable compensable character of [the] injury.” City of Boulder v.
Payne, 426 P.2d 194, 197 (Colo. 1967); see § 8-43-103(2), C.R.S.
2024. After recapping Nichols’s testimony regarding her experience
of her symptoms, the ALJ found that Nichols reasonably recognized
the foregoing when she suffered a flare-up of her symptoms in
October 2022 and could no longer alleviate the pain.
¶7 However, in ruling on Nichols’s claim for compensation, the
ALJ noted that only one provider, Dr. Carlos Cebrian, had
performed “a formal causation assessment” pursuant to the
Division of Workers’ Compensation’s (Division) causation guidelines
(promulgated at Dep’t of Lab. & Emp. Rule 17-5(D)(3), 7 Code Colo.
Regs. 1101-3:17-5(D)(3)). Dr. Cebrian opined that, in all medical
probability, Nichols’s work did not cause her symptoms. The ALJ
found Dr. Cebrian’s formal causation analysis “persuasive” and
credited it over Nichols’s own testimony regarding causation.
Nichols provided no evidence as to causation beyond her own
testimony.
3 B. The Panel’s Review
¶8 Nichols filed a petition seeking the Panel’s review. In that
petition, Nichols argued the Panel should correct or set aside the
ALJ’s order to the extent it denied Nichols relief because, among
other things, certain findings of fact compelled a disposition in her
favor. The Panel disagreed and affirmed the ALJ’s order.
II. Analysis
A. Standard of Review
¶9 Under section 8-43-308, C.R.S. 2024, we may not disturb
factual findings “supported by substantial evidence” and may only
set aside the Panel’s decision if (1) the findings of fact are not
sufficient to permit appellate review; (2) conflicts in the evidence are
not resolved in the record; (3) the factual findings do not support
the order; or (4) the award or denial of benefits is not supported by
applicable law.
¶ 10 Substantial evidence is “probative, credible, and competent, of
a character which would warrant a reasonable belief in the
existence of facts supporting a particular finding, without regard to
the existence of contradictory testimony or contrary inferences.”
Rathburn v. Indus. Comm’n, 566 P.2d 372, 373 (Colo. App. 1977).
4 Assessing the weight, credibility, and sufficiency of such evidence is
the ALJ’s exclusive domain, and findings based on conflicting
evidence are conclusive on review. Delta Drywall v. Indus. Claim
Appeals Off., 868 P.2d 1155, 1157 (Colo. App. 1993); Rockwell Int’l
v. Turnbull, 802 P.2d 1182 (Colo. App. 1990).
B. Proving a Compensable Cumulative Trauma Condition
¶ 11 Nichols bore the burden of proving, by a preponderance of the
evidence, that her employment proximately caused her symptoms.
Life Care Ctrs. of Am. v. Indus. Claim Appeals Off., 2024 COA 47,
¶ 16; see § 8-40-201(14), C.R.S. 2024. The ALJ determines
causation “based on the totality of medical and non-medical
evidence.” Dep’t of Lab. & Emp. Rule 17-5(D)(3), 7 Code Colo. Regs.
1101-3:17-5(D)(3).
¶ 12 To guide medical experts’ evaluations of the foregoing
causation requirement in cases involving cumulative trauma
conditions, such as CTS, the Division promulgated guidelines,
entitled “Medical Causation Assessment for Cumulative Trauma
Conditions” (Causation Assessment Guidelines). Id.
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24CA0754 Nichols v ICAO 01-30-2025
COLORADO COURT OF APPEALS
Court of Appeals No. 24CA0754 Industrial Claim Appeals Office of the State of Colorado WC No. 5-228-938-002
Janell Nichols,
Petitioner,
v.
Industrial Claim Appeals Office of the State of Colorado and State of Colorado Department of Public Health & Environment,
Respondents.
ORDER AFFIRMED
Division III Opinion by JUDGE BERGER* Dunn and Tow, JJ., concur
NOT PUBLISHED PURSUANT TO C.A.R. 35(e) Announced January 30, 2025
Boesen Law LLC, Bradley Unkeless, Greenwood Village, Colorado, for Petitioner
No Appearance for Respondent Industrial Claim Appeals Office
Philip J. Weiser, Attorney General, Tina R. Oestreich, Assistant Attorney General, Denver, Colorado, for Respondent Colorado Department of Public Health & Environment
*Sitting by assignment of the Chief Justice under provisions of Colo. Const. art. VI, § 5(3), and § 24-51-1105, C.R.S. 2024. ¶1 In this workers’ compensation action, Janell Nichols
challenges a final order of the Industrial Claim Appeals Office
(Panel) denying her claim. We affirm.
I. Relevant Facts and Procedural History
¶2 The following facts are undisputed. Nichols, a trained
epidemiologist and infection preventionist, worked for the Colorado
Department of Public Health and Environment (CDPHE) as a
Prevention Unit Manager. She worked mainly at a computer,
performing data and research analysis, and drafting documents.
¶3 On May 12, 2014, Nichols reported a work-related injury to
CDPHE, pursuant to the Colorado Workers’ Compensation Act (Act),
§§ 8-40-101 to -47-209, C.R.S. 2024. Specifically, Nichols
complained of pain, numbness, and tingling in her wrists and
fingers. Nichols visited two physicians in 2014 and received varying
diagnoses. Dr. John Aschberger diagnosed Nichols with “very mild”
carpal tunnel syndrome (CTS) in the right wrist only. Dr. Edmund
Rowland diagnosed her with “probable carpal tunnel syndrome on
both sides.” Neither physician opined as to the cause of Nichols’s
symptoms. Nichols concluded her medical treatment that year,
without filing a claim for compensation under the Act.
1 ¶4 Approximately eight years later, on October 24, 2022, Nichols
again reported an injury to CDPHE. In that report, Nichols
complained of CTS in “both wrists,” with increased pain and
numbness in the left. Multiple physicians evaluated Nichols. She
received diagnoses of bilateral CTS, median neuropathy, lateral
epicondylitis on both sides, and left cubital tunnel syndrome.
Nichols made a formal request for compensation under the Act,
which CDPHE contested, and the matter went to a hearing before
an administrative law judge (ALJ).
A. The ALJ’s Order
¶5 The ALJ reviewed evidence related to (1) Nichols’s claim that,
beginning in 2022, her job aggravated her pre-existing CTS and
therefore entitled her to compensation under the Act; and
(2) CDPHE’s affirmative defense alleging that Nichols failed to timely
file her claim under the limitations period that section 8-43-103(2),
C.R.S. 2024 prescribes. Following the hearing, the ALJ issued an
order denying Nichols’s claim and also denying CDPHE’s affirmative
defense. The ALJ found by a preponderance of the evidence that
Nichols timely filed her claim but failed to meet her burden of
demonstrating that her job caused her symptoms.
2 ¶6 In ruling on CDHPE’s affirmative defense, the ALJ noted that
the two-year limitation period begins “when the claimant, as a
reasonable [person], should recognize the nature, seriousness[,] and
probable compensable character of [the] injury.” City of Boulder v.
Payne, 426 P.2d 194, 197 (Colo. 1967); see § 8-43-103(2), C.R.S.
2024. After recapping Nichols’s testimony regarding her experience
of her symptoms, the ALJ found that Nichols reasonably recognized
the foregoing when she suffered a flare-up of her symptoms in
October 2022 and could no longer alleviate the pain.
¶7 However, in ruling on Nichols’s claim for compensation, the
ALJ noted that only one provider, Dr. Carlos Cebrian, had
performed “a formal causation assessment” pursuant to the
Division of Workers’ Compensation’s (Division) causation guidelines
(promulgated at Dep’t of Lab. & Emp. Rule 17-5(D)(3), 7 Code Colo.
Regs. 1101-3:17-5(D)(3)). Dr. Cebrian opined that, in all medical
probability, Nichols’s work did not cause her symptoms. The ALJ
found Dr. Cebrian’s formal causation analysis “persuasive” and
credited it over Nichols’s own testimony regarding causation.
Nichols provided no evidence as to causation beyond her own
testimony.
3 B. The Panel’s Review
¶8 Nichols filed a petition seeking the Panel’s review. In that
petition, Nichols argued the Panel should correct or set aside the
ALJ’s order to the extent it denied Nichols relief because, among
other things, certain findings of fact compelled a disposition in her
favor. The Panel disagreed and affirmed the ALJ’s order.
II. Analysis
A. Standard of Review
¶9 Under section 8-43-308, C.R.S. 2024, we may not disturb
factual findings “supported by substantial evidence” and may only
set aside the Panel’s decision if (1) the findings of fact are not
sufficient to permit appellate review; (2) conflicts in the evidence are
not resolved in the record; (3) the factual findings do not support
the order; or (4) the award or denial of benefits is not supported by
applicable law.
¶ 10 Substantial evidence is “probative, credible, and competent, of
a character which would warrant a reasonable belief in the
existence of facts supporting a particular finding, without regard to
the existence of contradictory testimony or contrary inferences.”
Rathburn v. Indus. Comm’n, 566 P.2d 372, 373 (Colo. App. 1977).
4 Assessing the weight, credibility, and sufficiency of such evidence is
the ALJ’s exclusive domain, and findings based on conflicting
evidence are conclusive on review. Delta Drywall v. Indus. Claim
Appeals Off., 868 P.2d 1155, 1157 (Colo. App. 1993); Rockwell Int’l
v. Turnbull, 802 P.2d 1182 (Colo. App. 1990).
B. Proving a Compensable Cumulative Trauma Condition
¶ 11 Nichols bore the burden of proving, by a preponderance of the
evidence, that her employment proximately caused her symptoms.
Life Care Ctrs. of Am. v. Indus. Claim Appeals Off., 2024 COA 47,
¶ 16; see § 8-40-201(14), C.R.S. 2024. The ALJ determines
causation “based on the totality of medical and non-medical
evidence.” Dep’t of Lab. & Emp. Rule 17-5(D)(3), 7 Code Colo. Regs.
1101-3:17-5(D)(3).
¶ 12 To guide medical experts’ evaluations of the foregoing
causation requirement in cases involving cumulative trauma
conditions, such as CTS, the Division promulgated guidelines,
entitled “Medical Causation Assessment for Cumulative Trauma
Conditions” (Causation Assessment Guidelines). Id. The Causation
Assessment Guidelines identify specific work tasks (Risk Factors),
such as typing and mousing, and the threshold amount of exposure
5 to each task which would render it medically probable that an
employee’s job caused her cumulative trauma condition. Id.
¶ 13 The Causation Assessment Guidelines direct clinicians to
determine whether the claimant’s job involves Risk Factors “in
sufficient degree and duration” to cause a condition or “aggravate” a
pre-existing condition. Id. Such determination typically involves
interviewing the claimant and/or performing a “formal job site
evaluation.” Id.
C. Application
¶ 14 On appeal, Nichols argues that the Causation Assessment
Guidelines expressly allow compensation when a claimant’s work
“combines with, accelerates, or aggravates a pre-existing
symptomatic condition.” She then reasons that, because the ALJ
found that her work “exacerbated” her pre-existing CTS (as
documented in paragraphs 9 and 29 of his factual findings), he
necessarily found that Nichols was entitled to compensation.
“Having found compensability,” Nichols contends, “there would be
no reason to assess” medical causation evidence based on the Risk
Factors, and thus the ALJ erred in considering Dr. Cebrian’s
causation opinion predicated on the Risk Factors. The ICAO
6 counters that the ALJ never found compensability and the Panel
was simply summarizing Nichols’s testimony. We need not resolve
this dispute because, even assuming the ALJ made such a finding,
the record supports the Panel’s determination.
1. The Causation Assessment Guidelines
¶ 15 Nichols is correct that the Causation Assessment Guidelines
allow compensation where a claimant’s work “combines with,
accelerates, or aggravates a pre-existing symptomatic condition.”
Dep’t of Lab. & Emp. Rule 17-5(D)(3), 7 Code Colo. Regs. 1101-
3:17-5(D)(3). However, the Causation Assessment Guidelines make
clear that such a finding must be predicated on a medical causation
analysis considering the Risk Factors.
¶ 16 We interpret administrative regulations, like the Causation
Assessment Guidelines, de novo, and apply the same rules of
construction we would apply in interpreting a statute. HCA-
HealthONE, LLC v. Colo. Dep’t of Lab. and Emp., 2020 COA 52, ¶ 29.
Thus, our primary task is to give effect to the Division’s intent. Id.
We cannot add or subtract words from a regulation, and we must
read words and phrases in context. People v. Howell, 2024 CO 42,
¶ 8. We give consistent, harmonious, and sensible effect to all the
7 regulation’s parts, rendering no words or phrases superfluous.
People v. Tafoya, 2019 CO 13, ¶ 17.
¶ 17 The introductory paragraph of the regulations describes
clinicians’ fundamental obligation to determine whether a “work-
related exposure or injury” necessitates medical treatment and
identifies four scenarios under which the Division covers such
treatment, including when a claimant’s work “combines with,
accelerates, or aggravates a pre-existing symptomatic condition.”
Dep’t of Lab. & Emp. Rule 17-5(D)(3), 7 Code Colo. Regs. 1101-
3:17-5(D)(3). The Causation Assessment Guidelines then expressly
set forth “[t]he steps in a medical causation assessment for
cumulative trauma conditions[.]” Id.
¶ 18 Reading these provisions together, and noting they all fall
within a section labeled “Medical Causation Assessment,” makes
clear that the scenarios in which treatment is covered are not
somehow divorced from the prescribed causation analysis; rather,
they are possible conclusions to be derived from such analysis. See
Allely v. City of Evans, 124 P.3d 911, 913 (Colo. App. 2005) (in
construing a regulation, we may consider headings the
promulgating body expressly included).
8 ¶ 19 This point finds further support in the express language of the
prescribed steps, including Step 4, which discusses how the Risk
Factors apply in the context of evaluating aggravation of a pre-
existing condition:
Complete the required match between the risk factors identified in Section D.3.d Risk Factors Definitions Table and the established diagnosis using the system described in Section D.3.b. Remember that preexisting conditions may be aggravated by, or contribute to, exposures lower than those listed on the table. Those preexisting conditions must be determined by the authorized treating physician based on physiologic plausibility.
Dep’t of Lab. & Emp. Rule 17-5(D)(3), 7 Code Colo. Regs. 1101-
3:17-5(D)(3). Read harmoniously together so as to give effect to all
provisions, the Causation Assessment Guidelines establish that an
aggravated pre-existing condition is compensable where a Risk
Factors analysis shows that work conditions more likely than not
caused the aggravation.
¶ 20 Nichols does not argue that the ALJ’s finding that her work
exacerbated her symptoms was premised on evidence invoking the
Risk Factors. (Indeed, she argues this finding allowed the ALJ to
disregard the Risk Factors entirely.) As such, and in light of the
9 foregoing discussion, that finding does not compel a determination
of compensability under the Causation Assessment Guidelines.
2. The ALJ’s Finding that Work Exacerbated Nichols’s Symptoms
¶ 21 To the extent Nichols argues the ALJ’s finding that work
exacerbated her symptoms nonetheless undermines the ALJ’s
denial of her claim, we reject her argument.
¶ 22 We interpret an ALJ’s order de novo, applying principles of
contract interpretation. See Blecker v. Kofoed, 672 P.2d 526, 528
(Colo. 1983) (applying contract interpretation principles to a court
order); Everett v. Dickinson & Co., 929 P.2d 10, 13 (Colo. App. 1996)
(courts interpret contracts de novo). Thus, in evaluating the
intended meaning of a provision in a court order, we construe it in
the context of the entire instrument, in accordance with ordinary
grammatical conventions, bearing in mind the nature of the subject
matter. Sch. Dist. No. 1 v. Denver Classroom Tchrs. Ass’n, 2019 CO
5, ¶¶ 12-13; Chandler-McPhail v. Duffey, 194 P.3d 434, 441 (Colo.
App. 2008). We reconcile any apparently conflicting provisions;
only where it is impossible to do so will we find the order
ambiguous and determine its meaning as an issue of fact. Sch.
10 Dist. No. 1, 2019 CO 5 at ¶ 14; Ryan v. Fitzpatrick Drilling Co., 342
P.2d 1040, 1043 (Colo. 1959).
¶ 23 Here, the subject finding is easily reconciled with the
disposition when properly viewed in context and considering that
the ALJ’s order adjudicated not only Nichols’s claim for
compensation but also CDPHE’s statute of limitations affirmative
defense. Nichols bore the burden of proof as to her claim, and
CDPHE bore the burden of proof as to its affirmative defense. See
Welsch v. Smith, 113 P.3d 1284, 1289 (Colo. App. 2005). The ALJ
found that neither party met their burden. The finding that
Nichols’s work “exacerbated [her] symptoms” relates to the ALJ’s
adjudication of the defense, which turned on whether the two-year
filing period began running in 2014 or 2022.
¶ 24 The two-year limitation period begins “when the claimant, as a
reasonable [person], should recognize the nature, seriousness[,] and
probable compensable character of [the] injury.” Payne, 426 P.2d
at 197; see § 8-43-103(2). As the ALJ noted, “[f]or a claimant to
appreciate an injury’s seriousness and probable compensable
nature, the injury must be to some extent disabling.” City of Colo.
Springs v. Indus. Claim Appeals Off., 89 P.3d 504, 506 (Colo. App.
11 2004) (internal quotations omitted). In ruling on the statute of
limitations issue, the ALJ found that Nichols did not recognize the
foregoing until “she suffered a flare-up of symptoms in October
2022” and “was no longer able to alleviate her pain.”
¶ 25 The ALJ’s findings of fact in paragraphs 9 and 29, where he
notes that Nichols’s work exacerbated her symptoms, provide
factual context and support for this determination. They set forth
the chronology of Nichols’s experience, as she explained it at the
hearing and reported it to clinicians. In fact, paragraph 29 prefaces
its reiteration of that chronology by stating CDPHE “has failed to
prove it is more probably true than not that [Nichols’s] claim is
barred by the statute of limitations[.]” According to common writing
conventions, all subsequent findings in the paragraph are
reasonably construed as intended to support that topic sentence.
This includes the finding (mirrored in paragraph 9) that “[t]he
combination of increased hours at her computer and changes to
workstation ergonomics exacerbated [Nichols’s] symptoms” and
prompted her to file a claim in 2022.
¶ 26 Paragraph 30 reiterates the point, referencing paragraph 29
and noting: “The preceding chronology reflects that [Nichols] has
12 experienced upper extremity symptoms sporadically since at least
2014[;] [h]owever, [her] present claim is predicated on a request for
compensation from October 24, 2022.” The ALJ then finds — based
on that timeline, as Nichols related it — that Nichols “did not
recognize the nature, seriousness, and probable compensable
character of her injury until October 2022[,]” when she could no
longer successfully “alleviate” her symptoms.
¶ 27 Both paragraphs 9 and 29 support the ALJ’s finding that
Nichols reasonably waited until 2022 to file a claim. Neither
purports to address medical causation nor references any
clinicians’ opinions regarding the same. Construing these
paragraphs as relating to the ALJ’s disposition of the affirmative
defense properly reconciles (1) any apparent conflict between the
finding that Nichols’s increased hours and workstation ergonomics
“exacerbated” her symptoms and (2) the ALJ’s later determination
that, “despite Claimant’s testimony,” she failed to prove legal
causation as to her claim by a preponderance of the evidence.
III. Disposition
¶ 28 The Panel’s order is affirmed.
JUDGE DUNN and JUDGE TOW concur.