If you've been injured on the job in the state of Colorado, it's technically legal for an employer to fire you during the process of a workers' compensation claim. However, employers are not legally allowed to fire employees out of retaliation because of the claim. They must present valid reasons for the termination. Colorado employers have to show just cause that an employee's actions were somehow responsible for their firing. If you believe your employer has unjustly terminated you in response to your workers' compensation claim, it's in your best interest to call a qualified workers' compensation attorney immediately.