Colorado is a federal OSHA state. There is no Colorado state plan of any kind — not a full plan, not even a public-employee-only plan. Private-sector employers in Colorado are inspected and cited by federal OSHA, and a contested citation goes to the Occupational Safety and Health Review Commission in Washington, not to a Colorado agency. That single fact changes the deadline, the forum, the procedural rules and who is allowed to stand up for you.
McNeil Safety Consulting represents Colorado employers in citation contests and provides the full industrial hygiene, safety program and environmental scope in the state. Colorado is our second-largest practice after California.
Who inspects and cites you in Colorado
Federal OSHA covers most private-sector workers in Colorado. State and local government employees are not covered at all — OSH Act protections extend to public employees only in states with an approved State Plan, and Colorado has none. Colorado municipalities, counties, school districts and special districts therefore operate outside OSHA enforcement entirely, which is a genuine gap rather than a technicality, and one that public entities in this state routinely misunderstand.
Colorado sits in OSHA’s Denver Region. OSHA announced this restructuring in May 2024 and completed it effective 1 October 2024, replacing numbered regions with city names, so any reference you find to “Region 8” is out of date. Colorado is also the only state in the Denver Region with more than one area office:
- Denver Area Office — 1391 Speer Boulevard, Suite 210, Denver. Covers the northern and northwestern counties, including Adams, Boulder, Broomfield, Denver, Eagle, Garfield, Grand, Larimer, Logan, Moffat, Routt and Weld.
- Englewood Area Office — 7935 East Prentice Avenue, Suite 209, Englewood. Covers the remaining 44 counties, including the south and west metro, El Paso, Pueblo, much of the Western Slope and the eastern plains. Note that Garfield, Moffat, Rio Blanco and Routt, though Western Slope counties, fall to the Denver office.
Which office issued the citation matters, because the notice of contest is filed with the Area Director named on the citation. Do not rely on a directory listing. Read the citation.
The deadline is 15 working days, and three details decide whether you make it
Under 29 U.S.C. §659(a) and 29 CFR §1903.17(a), an employer has fifteen working days to notify OSHA that it intends to contest the citation, the proposed penalty, or both. Miss it and, in the statute’s own words, the citation and assessment “shall be deemed a final order of the Commission and not subject to review by any court or agency.” There is no discretionary extension.
Three details are stated wrong almost everywhere, including by consultants who should know better:
- The clock runs from the notice of proposed penalty, not from the citation. In practice OSHA issues them as one combined document, which is why the shorthand survives — but the statute and the regulation both key on the penalty notice.
- The standard is postmarked, not received. Section 1903.17(a) requires that the notice of intention to contest “shall be postmarked within 15 working days of the receipt by the employer of the notice of proposed penalty.”
- It is filed with the Area Director, not with the Review Commission. The Area Director transmits it. Sending it to the wrong place burns days you do not have.
“Working days” is defined at 29 CFR §1903.22(c): Monday through Friday, excluding Saturdays, Sundays and federal holidays, with the day of receipt not counted and the fifteenth day counted.
You do not need an attorney to contest a Colorado citation
The Review Commission’s own procedural rule, 29 CFR §2200.22(a), says it plainly: “Any party or intervenor may appear in person, through an attorney, or through any non-attorney representative… A corporation or unincorporated association may be represented by an authorized officer or agent.” There is no leave requirement and no bar-membership requirement.
The mechanism is the companion rule, 29 CFR §2200.23: a representative enters an appearance either by signing the first document filed on the party’s behalf, or by filing a separate entry of appearance with the Executive Secretary, or with the Judge once the case is assigned. That is the federal rule as written — not an interpretation of one.
Colorado law now sits alongside the federal standards
Colorado has no state OSHA, but it is legislating actively in this space, and two 2026 developments matter to employers here.
HB26-1272 — extreme temperature worker protections
Signed 4 June 2026 and effective 12 August 2026, HB26-1272 directs the Colorado Department of Labor and Employment’s Division of Labor Standards and Statistics to begin collecting temperature-related workplace injury data by 15 January 2027, and to publish a model Temperature-Related Injury and Illness Prevention Plan by 1 July 2028, reviewed every five years thereafter. Employers who wait for the model plan will be building a heat and cold program on the state’s timetable rather than their own. We write these programs now, drawing on the Cal/OSHA heat standards, which are the most developed body of heat regulation in the country.
Colorado has no state general duty clause
HB26-1054, which would have created a state-law general duty obligation with private civil actions attached, failed on 13 May 2026. We mention it because the bill was widely reported while it was moving and some compliance material now describes Colorado as having a state general duty clause. It does not. Expect the proposal to return in a future session.
Premium Cost Containment and the PHEW statute
Colorado’s Premium Cost Containment Program, authorized at C.R.S. Title 8, Article 14.5 (§§8-14.5-101 to 8-14.5-110) with rules at 7 CCR 1101-6, certifies employer safety programs and carries a direct workers’ compensation premium discount of up to ten percent. It is one of the few places where a written safety program pays for itself in a line item you can point to. Separately, the Public Health Emergency Whistleblower law (PHEW), C.R.S. §8-14.4-101 et seq. — Article 14.4 is captioned “Worker Rights Related to a Public Health Emergency” — protects a worker who raises in good faith “any reasonable concern about workplace violations of government health or safety rules, or about an otherwise significant workplace threat to health or safety.” Despite the name, §8-14.4-102(1) is not limited to a declared emergency, and §8-14.4-101(3)(c) defines the covered principal to include “the state of Colorado, local governments, and political subdivisions of the state” as well as private employers.
Colorado also runs a federally funded 21(d) On-Site Consultation Program through Colorado State University. That program is free and confidential, and it is separate from enforcement — but it cannot represent you in a contest, and its findings are not privileged in the way an employer sometimes assumes.
What we do for Colorado employers
Colorado employs roughly 189,000 people in construction and 144,000 in manufacturing, and the work we are asked for here reflects that. The full scope is available in Colorado:
- Citation defense and contests before the Occupational Safety and Health Review Commission, including informal conferences with the Area Director, settlement, abatement negotiation and penalty reduction.
- Industrial hygiene — exposure assessment and personal sampling for silica, welding fume, noise, lead, solvents and respirable dust, with analysis by accredited laboratory methods.
- Written safety programs — the federal program set, site-specific health and safety plans, heat and cold programs written ahead of the HB26-1272 timetable, and hazard communication.
- Incident and accident investigation, including fatality and serious-injury response where the inspection is already underway.
- Phase I and Phase II environmental site assessments to ASTM E1527-21 and E1903-19.
- ISO 45001 and ISO 14001 management system development.
- Expert witness and litigation support for Colorado counsel in workplace injury and construction defect matters.
Frequently asked questions
Does Colorado have its own OSHA?
No. Colorado has no OSHA-approved State Plan, full or public-employee-only. Federal OSHA inspects and cites private-sector employers, and contests go to the federal Occupational Safety and Health Review Commission. Colorado state and local government employees are not covered by OSHA at all.
How long do I have to contest a Colorado OSHA citation?
Fifteen working days, postmarked, running from your receipt of the notice of proposed penalty and filed with the OSHA Area Director named on the citation — 29 U.S.C. §659(a) and 29 CFR §1903.17(a). Working days exclude weekends and federal holidays under 29 CFR §1903.22(c). If the period lapses the citation becomes a final order and is no longer reviewable.
Do I need a lawyer to fight an OSHA citation in Colorado?
No. 29 CFR §2200.22(a) permits a party to appear through any non-attorney representative, and permits a corporation to be represented by an authorized officer or agent. McNeil Safety Consulting is not a law firm and does not give legal advice; we appear as the employer’s authorized representative on the technical and regulatory merits of the citation.
Are you actually in Colorado, or do you subcontract the work?
Nothing is farmed out. Michael Karl McNeil performs the site work, the sampling, the program writing and the citation defense personally. The firm keeps a smaller number of engagements than a staffed consultancy precisely so that the person who saw the site is the person who signs the report and the person who defends it.
Talk to Michael directly about a Colorado matter
If a Denver or Englewood Area Office citation has landed, the fifteen working days are already running. Call (626) 546-9384 or email mike@mcneilsafetyconsulting.com. See also the full service area, OSHA violation defense, appeal deadlines by state and the background behind this practice.