The federal labor board’s new Republican leadership is unlikely to rely on rulemaking as a central strategy in reversing Obama-era workplace policy decisions, despite renewed pressure by some in the management community to do so.

Some business advocates and former National Labor Relations Board members have suggested the board turn to regulations, rather than case decisions, to cement their positions on issues in a way that’s tougher for the NLRB to undo down the road. But other stakeholders say the...