(a) In any representation case under part 1422 of this subchapter in which the Regional Director determines, based upon a stipulation by the parties, that no material issue of fact exists, the Regional Director may transfer the case to the Board; and the Board may decide the case on the basis of the papers alone after having allowed twenty-five (25) days for the filing of briefs. In any unfair labor practice case under part 1423 of this subchapter in which, after the issuance of a complaint, the Regional Director determines, based upon a stipulation by the parties, that no material issue of fact exists, the Regional Director may upon agreement of all parties transfer the case to the Board; and the Board shall decide the case on the basis of the case papers alone after having allowed twenty-five (25) days for the filing of briefs. The Board may remand any such case to the Regional Director if it determines that a material question of fact does exist. Orders of transfer and remand shall be served on all parties.

(b) In any case under parts 1422 and 1423 of this subchapter in which it appears to the Regional Director that the proceedings raise questions which should be decided by the Board, the Regional Director may, at any time, issue an order transferring the case to the Board for decision or other appropriate action. Such an order shall be served on the parties.