All public and private Colorado employers are now required to the complete the specific Colorado Affirmation form created by the Colorado Department of Labor and Employment. The new form can be used for employees hired between October 1, 2012 and October 1, 2014 and should not be used for those hired before September 6, 2012. As with the previous version, employers are required to keep the form along with copies of the documents provided by the employee for the completion of the I-9. The affirmation and documentation must only be kept for the duration of employment. Stern & Curray recommends that affirmation forms and accompanying documentation be purged when the employment relationship ends.