185.31 GRIEVANCE PROCEDURE.
   An employee of the City may present in writing any grievance which the employee may have to the head of the employee’s department. Within five working days thereafter, such department head shall afford such employee an opportunity to be heard and to present evidence relevant to such grievance. Within ten working days after hearing such grievance, the department head shall render a decision in writing thereon, which may contain such orders or directives as may be reasonably required to resolve the grievance and to prevent the recurrence of the type of incident or practice which gave rise to such grievance. A copy of such decision shall be delivered to each person affected thereby.
 
   Any person affected by any such decision may, within five working days from the date he receives a copy thereof, appeal such decision by filing a notice of such appeal with the City Manager. Within ten working days from the filing of such notice, the City Manager or his designated representative shall conduct a hearing upon such appeal and shall permit any person affected by the decision appealed from to be heard. The City Manager, or his designee, shall, upon conclusion of such hearing, affirm, reverse or modify the decision appealed from, as the facts may warrant, and the decision shall be rendered in writing within fifteen days from the date of conclusion of such hearing.