Where a union contract requires ADR to settle a dispute, the person who files the grievance may face

a. A decision by an arbitrator who facilitates a non-binding settlement by working with the parties to sort out the issues

b. A binding decision by an arbitrator who hears witnesses, reviews the evidence and makes a binding decision

c. A decision by a mediator who makes a binding decision after hearing witness and reviewing the evidence

d. A decision by an arbitrator who facilitates a binding settlement