Colorado At-Will Employment Laws: Exceptions and Your Rights

Colorado is an at-will employment state, meaning an employer may terminate an employee at any time, for any reason, or for no reason at all, without legal liability, unless a specific exception applies. The at-will rule has been recognized by Colorado courts as the default baseline of every employment relationship in the state.

Is Colorado an at-will employment state?

Colorado follows the at-will employment doctrine. Under that default rule, either the employer or the employee may end the employment relationship at any time, with or without cause, and with or without notice. An employer has no legal obligation to give a reason for a termination, and giving a false reason is not, by itself, a legal violation. This default can be modified, however, by a contract, a collective-bargaining agreement, or one of the recognized common-law exceptions described below. The Colorado legislature has also layered in statutory protections that carve specific termination scenarios out of the at-will rule.

Exceptions to at-will employment in Colorado

Colorado recognizes two of the three major common-law exceptions to the at-will rule, and rejects the third.

Public-policy exception (tort). Colorado recognizes a tort claim for wrongful discharge in violation of public policy. The leading case is Martin Marietta Corp. v. Lorenz, 823 P.2d 100 (Colo. 1992), in which the Colorado Supreme Court held that an employer may not fire an employee for a reason that contravenes a clear and specific public policy of the state. In Martin Marietta, the court itself concluded that the federal false-statements statute the employee relied on, 18 U.S.C. section 1001, was sufficiently specific to support the claim, rejecting the employer's argument that it reflected only a generic proscription against fraud. Examples of public policies courts have found adequate include statutory protections against retaliation for filing workers' compensation claims and refusing to participate in illegal activity. The employer's directive must violate a specific statute relating to public health, safety, or welfare, or undermine a clearly expressed public policy relating to the employee's basic responsibility as a citizen or right or privilege as a worker. Vague or general policy statements are not enough.

Implied-contract exception. Colorado also recognizes an implied-contract exception. In Continental Air Lines, Inc. v. Keenan, 731 P.2d 708 (Colo. 1987), the Colorado Supreme Court held that termination policies set out in an employee handbook can create an implied contract that restricts the employer's right to discharge at will. To enforce a handbook's termination procedures, the employee must show that the employer offered them and the employee accepted through initial or continued employment, or, alternatively, that the employer should reasonably have expected the employee to treat the handbook as a commitment and the employee reasonably relied on it to his or her detriment. Employees who are terminated in a manner inconsistent with a handbook's stated procedures may have a breach-of-implied-contract claim.

Covenant of good faith and fair dealing. Colorado does NOT recognize a standalone covenant of good faith and fair dealing in at-will employment. Some states allow an employee to sue when a termination is made in bad faith or in a pretextual manner designed to deprive an employee of an earned benefit. Colorado courts have declined to extend that doctrine to the employment context, so bad faith alone, without a public-policy violation or an implied contract, does not support a wrongful-termination claim.

Is Colorado a right-to-work state?

Colorado is NOT a right-to-work state, and this is an important distinction. In a right-to-work state, employees cannot be required to join a union or pay union dues as a condition of employment. Colorado has not adopted that rule.

Instead, Colorado operates under the Colorado Labor Peace Act (C.R.S. sections 8-3-101 through 8-3-123), which occupies a distinctive middle ground. Under the Labor Peace Act, union-security agreements, which can require employees to pay union dues or fees, are lawful, but only if a supermajority of employees in the bargaining unit votes to authorize one. This makes Colorado's framework stricter than a typical non-right-to-work state, but it stops well short of the full right-to-work rule.

A proposed constitutional amendment that would have made Colorado a right-to-work state, initiative 2025-2026 #7 (the proposed Colorado Workers' Rights Act), was withdrawn before its review-and-comment hearing, and no right-to-work measure appeared on the 2026 statewide ballot. As of 2026, there are 26 right-to-work states nationally, following Michigan's repeal of its right-to-work law, which took effect February 13, 2024 (2023 PA 8). Colorado is not among them.

Right-to-work law and at-will employment law are entirely separate concepts. Right-to-work concerns only union membership and dues. At-will employment concerns whether and how an employer may terminate an employee. The two rules can coexist in any combination across states.

What at-will employment does not allow in Colorado

At-will status never gives an employer a free pass to fire a worker for an unlawful reason. Federal law establishes a floor that applies in every state, including Colorado.

Under Title VII of the Civil Rights Act of 1964, an employer may not discharge an employee because of race, color, religion, sex, or national origin. The Age Discrimination in Employment Act (ADEA) prohibits termination based on age for workers 40 and older. The Americans with Disabilities Act (ADA) protects qualified individuals with disabilities. The Genetic Information Nondiscrimination Act (GINA) bars termination based on genetic information. The Pregnant Workers Fairness Act (PWFA), effective 2023, protects employees who need reasonable accommodations related to pregnancy, childbirth, or related conditions. The Equal Pay Act prohibits wage-based sex discrimination.

Federal law also bars retaliation for protected activity. An employer cannot legally fire an employee for taking leave under the Family and Medical Leave Act (FMLA), for reporting wage-and-hour violations under the Fair Labor Standards Act (FLSA), for engaging in concerted activity protected by the National Labor Relations Act (NLRA), for reporting workplace safety hazards under OSHA, or for military service or deployment under USERRA.

Colorado adds its own layer through the Colorado Anti-Discrimination Act (CADA), C.R.S. section 24-34-401 et seq. CADA prohibits termination on the basis of disability, race, creed, color, sex, sexual orientation, gender identity, gender expression, marital status, religion, age, national origin, or ancestry, and it applies to employers with one or more employees, a threshold lower than some federal statutes.

Colorado also has specific statutory protections for employees who file workers' compensation claims, who report violations of law to authorities, and who engage in lawful activities outside of work. These statutes operate independently of the common-law public-policy tort.

If you were fired in Colorado

The at-will rule means your employer was not required to give you a reason for your termination. However, not having a stated reason does not mean the termination was legal. An illegal reason remains illegal even when no reason is given.

If you have been fired in Colorado, the first step is to document everything while it is fresh: the date and circumstances of your termination, any communications from your employer, any warnings or performance reviews, and any complaints or protected activity you engaged in before the firing. If you were given a severance agreement, do not sign it immediately. Severance agreements typically release legal claims in exchange for payment. Neither Colorado law nor general federal law gives you a set period to think one over. The exception is a waiver of age-discrimination claims: if you are 40 or older, the federal Older Workers Benefit Protection Act requires that you be given at least 21 days to consider the agreement, or at least 45 days if the waiver is requested as part of a group exit-incentive or termination program (29 U.S.C. section 626(f)(1)(F)). Our severance pay calculator lays out these review and revocation windows alongside an estimate of the severance itself.

Next, review whether any of the exceptions discussed above could apply. Did your employer's handbook contain termination procedures that were not followed? Were you fired shortly after filing a workers' comp claim, taking FMLA leave, or reporting a legal violation? Was there any indication that your employer's real motive was your age, race, sex, disability, or another protected characteristic?

Employment law deadlines in Colorado are short. A charge with the Equal Employment Opportunity Commission (EEOC) or the Colorado Civil Rights Division (CCRD) must typically be filed within 300 days of the adverse action. Consulting a licensed employment attorney promptly is important, because missing a filing deadline can forfeit a valid claim.

This article is general legal information, not legal advice. Employment law varies by state and changes frequently, and it is not a substitute for advice about a specific termination. For guidance on your situation, consult a licensed employment attorney in Colorado.

Related: At-Will Employment by State | Whistleblower Protections

More Colorado Laws

• Colorado Employee Monitoring Laws
• Colorado Final Paycheck Laws
• Colorado Whistleblower Laws
• Colorado Workers Compensation Laws

Frequently Asked Questions

Is Colorado an at-will state?

Yes. Colorado is an at-will employment state, meaning an employer may terminate an employee at any time, for any reason or no reason, unless a specific exception or statute applies. The at-will default is well established in Colorado case law.

Can I be fired for no reason in Colorado?

Yes, under the at-will default. Your employer is not required to give a reason. However, if the real reason is unlawful, such as your race, disability, age, or retaliation for a protected activity, the termination is still illegal even if no reason was stated.

Is Colorado a right-to-work state?

No. Colorado is not a right-to-work state. The Colorado Labor Peace Act permits union-security agreements that can require dues payment, but only after a supermajority of bargaining-unit employees votes to authorize one. A proposed constitutional amendment to make Colorado a right-to-work state, initiative 2025-2026 #7, was withdrawn, and no right-to-work measure reached the 2026 statewide ballot.

Can my employer fire me for filing a workers' compensation claim in Colorado?

No. Retaliating against an employee for filing a workers' compensation claim violates both Colorado's public-policy exception (as recognized in Martin Marietta v. Lorenz) and specific statutory protections under Colorado law. Such a termination can support a wrongful-discharge tort claim.

Can my employer fire me for reporting illegal activity in Colorado?

Generally no. Firing an employee for reporting a legal violation to authorities can violate Colorado's public-policy exception. Colorado also has specific whistleblower statutes protecting certain categories of employees. See our guide to whistleblower protections for more detail.

Does my employee handbook protect me from being fired in Colorado?

It can. Under Continental Air Lines v. Keenan (Colo. 1987), termination procedures set out in a handbook can create an implied contract. The employee generally must show that the employer offered those procedures and the employee accepted them by starting or continuing to work, or that the employee reasonably relied on them to his or her detriment. Review the actual text of your handbook with an attorney.

How long do I have to file a wrongful termination claim in Colorado?

Deadlines depend on the type of claim. A charge with the EEOC or Colorado Civil Rights Division for discrimination or retaliation must usually be filed within 300 days of the termination. Tort claims for wrongful discharge have different statutes of limitations. Consult an attorney promptly, because missing a deadline can bar an otherwise valid claim.