Workers' Compensation Insurance in Colorado

Who Needs Workers' Comp in Colorado?

Under the Colorado Workers' Compensation Act (C.R.S. Title 8, Articles 40-47), all employers with one or more employees must carry workers' compensation insurance. This includes full-time, part-time, temporary, and seasonal workers. Sole proprietors and partners without employees are not required to carry coverage but can elect to cover themselves. Corporate officers can opt out of coverage with proper filing.

Penalties for Non-Compliance

Colorado employers who fail to carry required coverage face fines of up to $250 per day of non-compliance. The Division of Workers' Compensation can issue stop-work orders and assess additional penalties. Employers are also personally liable for the full cost of any employee injuries, including medical expenses, lost wages, and disability benefits. Willful non-compliance can result in criminal penalties.

Pinnacol Assurance

Pinnacol Assurance is Colorado's largest workers' compensation carrier and serves as the insurer of last resort. Any employer that cannot obtain coverage in the private market — whether due to a high experience mod, difficult class code, or claims history — can get a policy through Pinnacol. Unlike state funds in some other states, Pinnacol also actively competes for standard and preferred business, often offering competitive rates for well-managed companies.

How Colorado Rates Work

Colorado uses NCCI class codes and operates as an open-rating state. Carriers file their own rates with the Division of Insurance, which means premiums can vary between carriers. Your rate is based on your classification code, total payroll, experience modification rate, and carrier-specific factors. Colorado's business-friendly environment has contributed to competitive workers' comp pricing compared to many other states.

Common Colorado Class Codes