Submit an Appeal

If you receive a Notice of Determination, Liability Determination, Worker Classification, or Seasonal Status decision that you disagree with, you may submit an appeal. After we receive your appeal and schedule a hearing, you will receive a notice with the hearing date, time, and location.

When do I appeal?

Submit your appeal right away. Your appeal must be received within 20 calendar days of the date the Notice of Decision was mailed. If the 20th calendar day is a Saturday, Sunday, or legal holiday, the due date of the appeal becomes the next business day.
View Appeals FAQs

During the appeal process, claimants should continue to request payments online through MyUI+ or via phone.

Submitting an Appeal


You can submit your appeal online through MyUI+ by viewing your Notice of Determination, or by using the form on the back of the Notice of Determination to write and submit an appeal statement. Include a clear explanation of what you disagree with and why you disagree with the Notice of Determination. Your appeal statement does not need to be lengthy, but it should include specific details about the reason you disagree with the decision. Attach additional pages if necessary.

If mailing or faxing your appeal, please make sure that the correct decision is attached to the appeal, and that the details such as the identity of the employer and the name of the claimant match. Provide any address changes and interpreter information on the form. Sign and date your appeal. Put the claimant's name and social security number on each page.

Mail your appeal to:

Unemployment Appeals Section
PO Box 8988
Denver, CO 80201-8988

OR fax it to 303-318-9248. Do not do both.


Employers can submit an appeal by logging into MyUI Employer and navigating to the “Issues and Appeals” tab. This is the fastest way to appeal a decision. Otherwise, you may fill out the appeals section of the determination document you received and mail or fax the appeal to the below. Processing times will typically be longer for this option.

Unemployment Appeals Section
PO Box 8988
Denver, CO 80201-8988

Fax to: 303-318-9248 (make sure to include the front and back of the form)

After you have submitted your appeal, you may also submit any supporting documentation (attachments, etc), using this form linked below. This form is ONLY for supporting documentation and may not be used to submit an appeal. 

Submit Documentation For an Appeal Hearing

Contact Us

Colorado Division of Unemployment Insurance Appeals| 303-318-9299 | 1-800-405-2338 | Fax 303-318-9248 Contact Us