If the industrial commission is of opinion that—
(a) a decision has previously been made upon an application similar to that before it, and there is insufficient reason to warrant reconsideration of the matter; and
(b) having regard to the interests of the industrial organisations, other organisations or local governments immediately concerned, and of the community as a whole, further proceedings are not necessary or desirable;the industrial commission may dismiss, or refrain from further hearing or determining, an application made for an order under section 21 .