Administrative, Arbitration
Statutory time period for arbitration is a housekeeping rule, not a jurisdictional limit on the scope of arbitrablility of claim.
http://www.cafc.uscourts.gov/sites/default/files/opinions-orders/15-3032.Opinion.1-12-2016.1.PDF
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.