The National Labor Relations Board is extending the deadline to file briefs on whether it should reverse a decision requiring employers to allow pro-union messaging on workplace email systems, it announced Aug. 31.

The board had said Aug. 1 it would accept briefs from the public on the issue, with an original deadline of Sept. 5. That deadline has now been extended to Oct. 5.

The extension is “to aid in the consideration of the issues raised in” Cesar’s Entertainment, a case in which a party has called on the board to reconsider the contentious Purple Communications decision that allowed employees to use work emails for union business.

The NLRB didn’t immediately respond to Bloomberg Law’s request for comment.