At-Will Employment Laws in Colorado

Federal law does not impose an at-will employment requirement; rather, absent specific federal statutes, at-will employment exists as a default common law rule in most U.S. jurisdictions. However, federal statutes create broad exceptions. Title VII of the Civil Rights Act of 1964 (42 U.S.C. § 2000e) prohibits termination based on race, color, religion, sex, or national origin. The Age Discrimination in Employment Act of 1967 (29 U.S.C. § 621) protects workers 40 and older from age-based termination. The Americans with Disabilities Act of 1990 (42 U.S.C. § 12101) prohibits termination due to disability and requires reasonable accommodations. The Family and Medical Leave Act of 1993 (29 U.S.C. § 2601) prohibits termination for taking protected leave. Federal whistleblower statutes, including Sarbanes-Oxley (18 U.S.C. § 806) and the Dodd-Frank Act (15 U.S.C. § 78u-6), protect employees reporting fraud or securities violations.

Federal law also protects employees for military service (Uniformed Services Employment and Reemployment Rights Act, 38 U.S.C. § 4301), jury duty participation (federal common law), and union organizing activity (National Labor Relations Act, 29 U.S.C. § 151). The Occupational Safety and Health Act (29 U.S.C. § 660) prohibits retaliation for safety complaints. The Fair Labor Standards Act (29 U.S.C. § 201) protects employees asserting minimum wage and overtime rights. The EEOC enforces Title VII and ADEA; the DOL enforces FMLA and OSHA whistleblower provisions. Remedies include back pay, reinstatement, compensatory damages, and in some cases punitive damages and attorney's fees.

Colorado is a pure at-will employment state, meaning employers may generally terminate employees for any reason, no reason, or even an arbitrary reason, provided the termination does not violate a specific statute or public policy. Colorado recognizes this rule through common law development, codified in case law rather than a single statute. However, Colorado law has carved out three significant exceptions that restrict at-will authority.

First, the public policy exception prohibits termination when the firing violates a substantial public policy recognized by Colorado law. Colorado courts have recognized public policy exceptions for termination based on jury duty service, reporting illegal conduct to law enforcement (also codified in the Whistleblower Protection Act, C.R.S. § 24-50.5-101), and refusal to engage in illegal activity. Additionally, Colorado courts have recognized implied public policy protections for employees fired for exercising statutory rights, such as asserting minimum wage claims, workers' compensation claims, or leave rights.

Second, Colorado recognizes an implied-contract exception. If an employer's conduct, written policies, or oral statements create a reasonable expectation that employment is not terminable at-will, the employer may be liable for breach of that implied contract. This applies particularly when employees are given handbooks suggesting progressive discipline or when supervisors make specific assurances about job security.

Third, Colorado recognizes a covenant of good faith and fair dealing in all contracts, including employment. This means employers cannot terminate solely to avoid paying benefits earned or owed, or in a manner that is arbitrary or in bad faith. Colorado courts, however, apply this narrowly in employment contexts, focusing on whether the employer acted with honest intent and fair dealing.

Covered employers include all Colorado employers—there is no minimum size threshold for at-will employment or its exceptions. Colorado's whistleblower protections (C.R.S. § 24-50.5-101) and Colorado Civil Rights Act (C.R.S. § 24-34-402) apply to employers with as few as one employee. Colorado's Wage and Hour protections apply to all employers. Remedies for wrongful termination in violation of public policy include reinstatement, back pay with interest, and front pay. Some courts award consequential damages including emotional distress. Under the Colorado Civil Rights Act, damages include actual damages, compensatory damages, and civil penalties up to $300,000 depending on employer size. Under the Whistleblower Protection Act, remedies include reinstatement, back pay, and damages for lost benefits and emotional distress.

Colorado law recognizes several important exceptions to pure at-will employment. The most significant is the public policy exception, which prohibits termination that violates a substantial public policy of the state. Colorado courts recognize public policy exceptions for termination based on performance of jury duty, refusal to commit illegal acts, and reporting illegal conduct to law enforcement or other authorities (codified in the Whistleblower Protection Act, C.R.S. § 24-50.5-101, which protects employees reporting violations of any federal, state, or local law, rule, or regulation).

Second, Colorado recognizes an implied-contract exception. If an employer's employee handbook, oral representations, or course of conduct reasonably creates an expectation that employment is not at-will but is subject to just cause or progressive discipline, the employee may claim breach of an implied contract. Employers can defeat this by clearly stating in writing that employment remains at-will despite any policies. Third, Colorado enforces an implied covenant of good faith and fair dealing; employers cannot terminate solely to deprive an employee of earned compensation or benefits, though Colorado courts apply this narrowly.

Additional statutory exceptions include protection under the Colorado Civil Rights Act (C.R.S. § 24-34-402) against termination based on race, color, national origin, sex, religion, disability, age (40+), sexual orientation, or gender identity. Employees cannot be terminated for requesting reasonable accommodation for disability or for engaging in the interactive process. Employees also cannot be fired for taking protected leave under the Colorado Civil Rights Act's pregnancy provisions, the Family and Medical Leave Act (for covered employers), or for serving in the military. Colorado also protects employees for wage and hour assertions (minimum wage, overtime), workers' compensation claims (C.R.S. § 8-42-127), and for calling in sick under paid leave laws.

One important limitation: Colorado law does not recognize a general "fairness" or implied covenant exception beyond what is codified. Employers may terminate for poor performance, bad business decisions, or simple personality conflicts. Additionally, at-will employment rules override most traditional contract principles unless a specific written, individual employment contract exists that explicitly limits the employer's termination right. Unions and collective bargaining agreements override at-will employment where applicable.

Step 1: Document Everything. Begin immediately collecting evidence of the discriminatory conduct, harassment, or policy violation leading to your termination. Keep dated records of emails, text messages, performance reviews, witnesses to conversations, and any written policies the employer violated. Save copies of your employee handbook, any written assurances about job security, emails from supervisors suggesting you could not be fired without cause, and any communications showing the reason given for termination differs from the real reason. Store documents outside the workplace (personal email, cloud storage, or physical files at home) so you retain access if access to work systems is terminated. If termination was sudden after reporting illegal conduct or refusing to participate in illegal activity, document this timing and any prior communications showing the report or refusal.

Step 2: Internal Complaint and Preservation. Before filing externally, consider sending a written email to Human Resources documenting the termination or impending termination, the reason you believe it violates Colorado law, and requesting reconsideration or an explanation. This is not always necessary but creates a record that you complained internally and gives the employer an opportunity to correct course. Send this email via company email so it is logged in the company system, then follow up with a certified letter to the HR department. Request confirmation of receipt. This step is important because it triggers the employer's obligation to preserve evidence—once an employer knows a legal claim may follow, failure to preserve relevant documents can result in sanctions and spoliation consequences. Do not be confrontational; state facts clearly and cite the specific law you believe was violated (e.g., "I believe my termination violates C.R.S. § 24-50.5-101, the Whistleblower Protection Act, because I reported illegal conduct to the Colorado Division of Labor Enforcement on [date]").

Step 3: File a Charge with the Colorado Civil Rights Division. For claims involving discrimination (race, color, national origin, sex, religion, disability, age, sexual orientation, gender identity) or retaliation for requesting accommodation or reporting discrimination, file with the Colorado Civil Rights Division (CCRD). For claims involving whistleblower retaliation (reporting any federal, state, or local law violation), file with the Colorado Department of Labor and Employment, Division of Labor Enforcement. The filing deadline for both is 180 days from the date of the unlawful practice (e.g., the termination date). Colorado is a "deferral" state, meaning CCRD must receive your charge within 180 days; if you file with the EEOC first, you then have 60 days to file with CCRD to preserve your right to sue in Colorado court.

For CCRD: Go to https://humanrights.colorado.gov or call (303) 894-2997. You can file online, by mail, or in person. You will need: your name, address, phone number, and email; the employer's name, address, and phone number; the date the discrimination or retaliation occurred; a description of what happened; identification of the protected class affected (e.g., "I am 52 years old and was terminated after a younger worker took my position"); and the name of any witnesses. You do not need an attorney to file, and filing is free. CCRD will send the charge to the employer and open an investigation.

For whistleblower retaliation under C.R.S. § 24-50.5-101: File with the Colorado Department of Labor and Employment, Division of Labor Enforcement, at https://www.colorado.gov/cdle or call (303) 318-8000. You can file online or mail a written complaint. You will need to provide the same basic information plus details of the illegal conduct you reported, the date and method of your report (e.g., phone call to the EPA on [date]), the date of termination, and how the termination was connected to the report.

Step 4: Investigation Process. Once CCRD or the Division of Labor Enforcement receives your charge, they will assign it to an investigator. You will be notified of the investigator's name and contact information. The investigator will interview you (typically by phone), request all documents you have (send copies, not originals), contact the employer, and request the employer's response and documents. The employer will typically deny the allegations and explain their version of events. The investigator may interview witnesses. Investigation timelines vary but typically take 90-180 days. You will be expected to respond to any questions or requests for additional information within 10-14 days. Do not ignore investigator requests, as delays may result in closure of the file.

After investigation, the CCRD investigator will issue a Determination of Probable Cause (if facts support your claim) or a No Probable Cause determination (if the employer's explanation is accepted). If Probable Cause is found, the CCRD will attempt to conciliate—bring you and the employer together to negotiate a settlement. If conciliation fails, you have the right to request a hearing before an administrative law judge (ALJ) within 20 days of the final determination.

Step 5: Consult an Attorney. Consider consulting an employment law attorney after filing your charge if: (1) the employer is large and well-resourced (they will likely hire counsel and be prepared for hearing), (2) your damages are significant (lost wages, emotional distress, lost benefits), (3) the case involves complex facts or legal issues, or (4) you intend to request a hearing before an ALJ. Many employment attorneys work on contingency, meaning they take a percentage of any settlement or judgment rather than an hourly fee. Initial consultations are often free. An attorney can help you understand the strength of your case, negotiate with the employer, and represent you at hearing. However, you have the right to represent yourself ("pro se") at CCRD proceedings, and many employees do so successfully in straightforward cases. If you cannot afford an attorney, contact Colorado Legal Services (https://www.coloradolegalservices.org, (303) 837-1313) or your local legal aid office. If your claim involves whistleblower retaliation, some attorneys specialize in retaliation cases and will take them on contingency if the facts are strong.