2015 APWU Contract Negotiations Update
...The timetable is hard to predict, but if mediation doesn’t result in an agreement soon, I expect that the USPS and the APWU will choose an arbitration panel and begin the initial arbitration hearings by mid-November.
Interest arbitration takes time. In 2000, the last time we engaged in the process, it took 13 months to complete.
Reference Source: www.apwu.org