
A Guide to Pinnacol Workers’ Comp Claims After a Work Injury in Denver
What injured Colorado workers need to know about filing a claim with Pinnacol Assurance
If you get hurt on the job in Colorado and your employer has workers’ compensation insurance, your claim will likely be handled by Pinnacol Assurance. Pinnacol currently provides coverage to over 45,000 employers and nearly one million workers across the state, which means a large percentage of workplace injury cases in Colorado involve Pinnacol insurance.
Unfortunately, the Pinnacol workers’ comp process is not always as straightforward as it should be. There are deadlines to meet and rules about where you can seek medical care. If your paperwork is incomplete or questions arise about how your injury happened, benefits can be delayed or outright denied.
Even when a claim is approved, disputes sometimes come up over medical treatment, work restrictions, long-term disability ratings, and payout amounts.
Large insurance companies like Pinnacol insurance handle thousands of claims and have experienced adjusters managing each one. Most injured workers, on the other hand, are going through the process for the first time while also trying to heal and pay their bills. This can put them at a huge disadvantage and lead to confusion about what they’re actually entitled to under Colorado law.
In this guide, we’ll explain what Pinnacol injured workers need to know about filing a claim, what benefits may be available, and what to do if your claim is denied.
If you have questions about how to file a Pinnacol workers’ comp claim, appeal a denied claim, or maximize your benefits, schedule a free consultation with the Denver work injury attorneys at Babcock Tucker. We’re here to help you understand your rights and take action to protect them.
Who is the largest workers’ compensation insurance company in Colorado?
The largest workers’ compensation insurance company in Colorado is Pinnacol Assurance. It provides coverage to tens of thousands of employers and insures nearly one million workers across the state.
Because of its size, many on-the-job injury claims in Colorado are handled through Pinnacol workers’ comp.
Who is Pinnacol Assurance?
Pinnacol Assurance is a Colorado-based workers’ compensation insurance carrier that has been serving employers and injured workers for more than 25 years.
When a business buys coverage through Pinnacol insurance, Pinnacol is the company that processes claims, pays medical bills, and issues wage replacement benefits if someone gets hurt at work.
Does Colorado Workers’ Compensation Cover All Injuries?
Learn what’s covered and not covered under workers’ comp after an on-the-job injury in Denver.
Is Pinnacol Assurance workers’ comp?
Pinnacol Assurance is not the workers’ compensation system itself. It is an insurance company that provides workers’ comp coverage to employers.
If your employer is insured through Pinnacol, that simply means Pinnacol is the company that will handle your injury claim and pay any workers’ comp benefits you qualify for under Colorado law.
Is Pinnacol Assurance a government agency?
No, Pinnacol Assurance is not a typical state agency, but it was created by the state of Colorado more than a century ago as a way to make sure employers had access to workers’ compensation coverage.
Today, it operates as a quasi-public insurance carrier, meaning it serves a public purpose but functions like an insurance company rather than a government department.
In practical terms, this means Pinnacol insurance sells policies to employers, collects premiums, investigates claims, and pays benefits just like a private insurance carrier would. At the same time, it has a unique legal status under Colorado law because of how it was created and governed.
What Not To Do While on Workers’ Comp in Colorado
Avoid these common mistakes that could hurt your workers’ compensation claim in Denver.
A brief look at past legislative oversight of Pinnacol
In 2009, Pinnacol faced scrutiny from state lawmakers over how it handled claims and set insurance rates. A special legislative committee heard testimony from employers, injured workers, doctors, and Pinnacol representatives. Lawmakers proposed reforms focused on transparency, accountability, and protecting both employers and injured workers.
Around that same time, a dispute between Pinnacol and the Colorado Division of Insurance over rate-setting practices led to an audit and settlement. Pinnacol agreed to:
- Pay $15 million back to certain policyholders;
- Pay a civil penalty of $80,000;
- Stop using certain rate factors that regulators said violated state law; and
- Implement stronger compliance oversight.
As Denver work injury attorney R. Mack Babcock said at the time:
“Despite their best efforts, claims are not always handled properly at Pinnacol, so I’m glad the Colorado General Assembly, which has the power to influence their operations, is finally taking notice. But it’s also unfortunate the General Assembly has to get involved. Injured workers shouldn’t have to enlist the services of a workers’ comp attorney like myself to get the help they need, as this goes against the original idea of workers’ compensation and a no-fault system.”
So, while Pinnacol plays a major role in Colorado’s workers’ compensation system, like any large insurer, its decisions can and should be questioned and challenged when necessary.
How do I file a workers’ comp claim through Pinnacol after a work injury in Colorado?
If you get hurt at work or develop an occupational disease because of your job and your employer has coverage through Pinnacol, the process starts with you. These are the steps required to file a workers’ comp claim in Colorado with Pinnacol insurance:
- First, report your injury to your employer as soon as possible. In Colorado, you generally must give written notice to your employer within 10 days of the accident. Waiting too long can lead to a denied claim.
- Next, get medical care from an authorized doctor. Your employer should give you a list of approved doctors. Unless it is an emergency, you’ll need to be treated by one of those providers for your care to be covered by workers’ comp.
- After you report the injury, your employer is required to notify Pinnacol about your injury and open a claim within 10 days. Pinnacol will assign an adjuster who reviews the details of your injury, medical records, and work status. The company will then decide whether to accept or deny the claim.
- If the claim is accepted, Pinnacol will begin paying for approved medical treatment and any wage replacement benefits you qualify for. If it is denied, you have the right to challenge that decision and request a hearing.
- If your claim is denied, you can begin the appeals process (known as adjudication) by filing out the “Application for Hearing” form on the Colorado Office of Administrative Courts (OAC) website. At that point, you need to start preparing to present evidence before a judge, like medical records, doctor testimony, and wage documents that support your case. Pinnacol will have its own lawyers arguing against your claim, so having a Denver work injury attorney in your corner can significantly increase your chance of a successful appeal.
- You will also need to file an official claim by submitting form WC 15 “Worker’s Claim for Compensation” to the Colorado Division of Workers’ Compensation within 2 years of your injury, but the sooner the better.
Throughout the process, be sure to keep copies of everything. Save medical records, work restrictions, and any letters you receive from the Pinnacol. If you feel unsure about what to do at any point, reach out to a local Colorado workers’ compensation attorney who can help you avoid mistakes that could affect your benefits.
Need help filing a Pinnacol workers’ comp claim after a work injury in Denver?
When you’re facing a large insurance company like Pinnacol, experience on both sides of the system matters.
Early in his career, attorney Mack Babcock worked for major insurance companies and corporations such as Pinnacol Assurance, State Farm, The Hartford, Sentry Insurance, and Qwest Communications. That background has given him firsthand insight into how insurers evaluate claims, investigate injuries, and defend contested cases.
Today, he uses that insider knowledge to advocate for injured Colorado workers. If you were hurt at work in Denver and are facing delays, denials, or reduced benefits through Pinnacol insurance, turn to a legal team that understands the playbook insurers rely on.
Schedule a free consultation with Babcock Tucker today. Our Denver work injury lawyers know how these companies operate and how to push back to help you recover the full benefits you deserve under Colorado law.



