Step 1.If the complaint is not resolved, as stated in 21.4.1, the complainant, within seven. 7) working days following the date of the response, or non-response, shall file a formal written grievance with the complainant’s immediate supervisor. The written statement shall contain a clear, concise statement of the grievance, the specific contract article(s) alleged to have been violated, the decision rendered at the informal level, and the specific remedy sought.