456 CMR 17.14
Burden of Proof
(1) When a complaint issued under 456 CMR 17.00 alleges that a service fee is invalid under
456 CMR 17.02 or 17.04, the burden of proof shall be on the charging party to establish the
defects by a preponderance of the evidence.
(2) When a complaint issued under 456 CMR 17.00 alleges that part or all of the amount of a
service fee is impermissible under 456 CMR 17.03, the burden of proof shall be on the exclusive
bargaining agent to establish by a preponderance of the evidence that the contested amounts are
permissible.