Colorado — Workplace Safety

Colorado does not operate an OSHA-approved State Plan. Federal OSHA directly covers most private sector employers and workers in the state. State and local government workers are not covered by federal OSHA and do not have OSH Act protections in Colorado because the state lacks an approved plan.

Source: State Plans | OSHA

Colorado requires agricultural employers to implement heat illness and injury protections when worksite temperatures reach or are forecast to reach at least 80 degrees Fahrenheit. Core requirements include providing potable drinking water, access to shade (now explicitly including indoor, air-conditioned spaces), effective emergency communication, and training on prevention, symptoms, and first aid for heat illness. The foundational rules were adopted in the Agricultural Labor Conditions Rules (7 CCR 1103-15, Rule 3), effective May 1, 2022.

2026 Amendments: Effective January 1, 2026, Colorado has clarified and expanded several aspects of these requirements:

• Employers must now monitor heat conditions throughout the workday, not only at shift start.
• Indoor, air-conditioned spaces now count as compliant shade locations for required heat protection breaks.
• Specific acclimatization protocol must be followed for the first four days of employment (or return) where temperatures exceed 80°F, gradually introducing new/returning workers to elevated heat conditions.
• Updated definitions and required training details reflect enforcement experience from the initial rules.

All provisions remain grounded in 7 CCR 1103-15 and are authorized by C.R.S. § 8-13.5-203. Employers should monitor for further Division of Labor Standards and Statistics bulletins or rule updates as implementation continues.

Source: 7 CCR 1103-15, Rule 3 Source: C.R.S. § 8-13.5-203

As of June 2026, Colorado House Bill 26-1054, which proposed establishing state-level workplace safety standards including a Colorado general duty clause, has not been enacted into law. The text of the bill addressed creating a new statewide workplace safety program to supplement or overlay federal OSHA in Colorado, aiming to extend safety protections (including for public sector employees left uncovered under federal OSHA). Key elements of the introduced bill included (1) adopting a Colorado General Duty Clause similar to Section 5(a)(1) of the federal OSH Act, requiring employers to furnish a workplace free from recognized hazards causing or likely to cause death or serious harm; (2) tasking the Colorado Department of Labor and Employment (CDLE) with rulemaking and enforcement powers; (3) enabling the agency to issue citations and penalties, as well as provide technical assistance; and (4) setting coverage for most private employers and state/local government entities.

However, legislative records from the Colorado General Assembly confirm that HB 26-1054 did not pass during the 2026 legislative session and did not become law. Without enactment, none of its proposed requirements or enforcement mechanisms are effective. Employers in Colorado continue to be governed by federal OSHA rules (except for specific state-level rules such as agricultural worker heat protection), and there is currently no state statutory general duty clause or comprehensive state-level workplace safety regime.

Source: Colorado General Assembly - Bill Tracker for HB26-1054

Colorado does not operate an OSHA-approved State Plan, and federal OSHA jurisdiction expressly excludes state and local government employers under 29 U.S.C. § 652(5) (defining “employer” to exclude “any State or political subdivision of a State” unless covered by a state plan). This leaves Colorado public-sector (state and local government) workers without OSH Act protections. As of July 2026, there is no statewide general duty clause or public-sector workplace safety law providing enforceable safety obligations for state or local government employers in Colorado.

Multiple web and legislative searches confirm that no major Colorado municipality—such as Denver, Aurora, or Colorado Springs—has enacted a local ordinance or municipal "mini-OSHA" program establishing enforceable workplace safety standards for public-sector workers. While cities have general authority to adopt workplace policies or address employee safety in limited contexts, there is no evidence of any local law or ordinance in Colorado that creates statutory or regulatory safety duties equivalent to federal OSHA or a state OSHA plan for government employees.

Finally, although Colorado House Bill 26-1054 (2026) would have created a state-level general duty clause applying to all employers—including government agencies—and enabled CDLE to enforce workplace safety obligations statewide, it did not pass and is not law as of July 2026. Consequently, public-sector employees in Colorado remain without explicit, enforceable workplace safety protections outside of general workers’ compensation or tort remedies.

Source: 29 U.S.C. § 652(5) Source: Colorado General Assembly - Bill Tracker for HB26-1054

In Colorado, legally enforceable heat-illness protections currently apply only to agricultural employers under 7 CCR 1103-15 (Agricultural Labor Conditions Rules), which took effect May 1, 2022. These rules require employers to provide water, shade, and training on heat illness prevention when the worksite temperature reaches or is forecast to reach 80 °F (Rule 3.1.2). Additional “increased risk” protections, such as more frequent breaks and emergency response plans, are triggered at 95 °F (Rule 3.2), or when other risk factors are present (such as during the first four days of work or unhealthy air quality). Importantly, these requirements do not extend to non-agricultural indoor or outdoor workers (e.g., construction, landscaping, delivery), and as of June 2026, no Colorado statute or regulation imposes heat-related obligations on non-agricultural employers.

For these non-agricultural outdoor workers, federal OSHA controls. The OSHA Act § 5(a)(1) General Duty Clause obligates all covered employers to keep workplaces free from recognized hazards that may cause death or serious physical harm—including heat—if there are feasible means of abatement. While no specific OSHA standard governs occupational heat illness in the general industry or construction sectors, federal OSHA actively enforces heat safety via the General Duty Clause. OSHA’s National Emphasis Program (NEP), launched in April 2022, targets workplaces exposed to heat hazards for proactive inspections and education. Employers should expect increased scrutiny under this framework (see OSHA’s NEP and heat hazards pages for current federal emphasis and guidance).

Federal guidance (especially the NIOSH 2016 criteria) recommends heightened precautions based on wet-bulb globe temperature (WBGT) or Heat Index and worker acclimatization status. NIOSH’s Recommended Alert Limit (RAL) for unacclimatized workers and Recommended Exposure Limit (REL) for acclimatized workers offer advisory thresholds—these are not binding law but reflect current best practices recognized by OSHA.

In summary, non-agricultural outdoor employers in Colorado must:

• Monitor worksite environmental heat (using WBGT, Heat Index, or similar metrics).
• Provide worker training, water, rest breaks, access to shade, and acclimatization procedures.
• Develop effective emergency response protocols for suspected heat illness.
• Understand that while Colorado has not mandated these measures outside agriculture, federal OSHA may cite for recognized hazardous exposures under the General Duty Clause.

Source: 7 CCR 1103-15, Agricultural Labor Conditions Rules Source: OSH Act § 5(a)(1), General Duty Clause Source: OSHA Heat Exposure and NEP Source: Federal Register, Heat ANPRM, 86 FR 59309 (2021)

Colorado is subject to federal OSHA for workplace safety compliance, including recordkeeping and injury/illness reporting by most private sector employers. These requirements center around the OSHA Forms 300, 301, and 300A—logs and summaries documenting serious work-related injuries and illnesses.

1. Who must keep records (Form 300 log requirements and exemptions):

• General rule: All private sector employers with 11 or more employees at any time during the calendar year must maintain OSHA injury and illness records (Forms 300, 301, and 300A).
• Exemptions: Employers with 10 or fewer employees throughout the previous calendar year are exempt from routine recordkeeping but must still report serious incidents (see below). Certain "low-hazard" industries—identified by NAICS code in Appendix A to Subpart B of 29 C.F.R. § 1904—are also generally exempt, regardless of size.

2. What must be recorded: Recordable cases include work-related fatalities, injuries or illnesses that result in loss of consciousness, days away from work, restricted work ("light duty"), job transfer, or medical treatment beyond first aid. Needle-sticks, hearing loss, tuberculosis, and other special cases must also be recorded if work-related (see 29 C.F.R. §§ 1904.4–1904.7 for details).

3. Fatality and serious injury reporting (immediate notice): All employers, including those otherwise exempt from recordkeeping, must report:

• Any employee fatality within 8 hours of learning about it.
• Any inpatient hospitalization, amputation, or loss of an eye within 24 hours.

Reporting is made to OSHA by phone, the 24-hour OSHA hotline, or online submission.

4. Annual summary and posting: Employers required to keep records must:

• Complete and certify the OSHA 300A annual summary.
• Post the summary conspicuously each year from February 1 to April 30.
• Retain Logs and Summaries for five years.

5. Electronic reporting: Certain establishments must submit injury/illness data electronically:

• Establishments with 100+ employees in designated high-hazard industries must submit data from Forms 300 and 301.
• Establishments with 20–249 employees in specific industries must submit Form 300A. Whether an establishment’s NAICS code is covered is defined in the designated industry lists (Appendix A for Form 300A, Appendix B for Forms 300 and 301) to 29 C.F.R. § 1904.41.

Key authority: 29 C.F.R. Part 1904, especially §§ 1904.1–1904.7, 1904.39, 1904.41. Exemptions and form requirements are detailed at https://www.osha.gov/recordkeeping and https://www.osha.gov/laws-regs/regulations/standardnumber/1904/.

For public sector employers, see the public-sector-coverage section in this guide. For general rationale and further details, refer directly to OSHA’s recordkeeping compliance pages.

Source: 29 C.F.R. Part 1904, OSHA Recordkeeping Requirements Source: OSHA Recordkeeping and Reporting Overview Source: OSHA Report a Fatality or Severe Injury