A National Labor Relations Board plan to change elements of its union election rules won’t feature a broad reconsideration of a contentious Obama-era regulation that streamlined voting procedures.

The board will issue a proposed rule sometime this winter that will address the NLRB’s “blocking charge” policy to pause elections if workers or unions file complaints alleging employers interfered with the elections, NLRB Chairman John Ring said Nov. 8 during a session at the American Bar Association’s Labor and Employment Law Conference in San Francisco.

The proposal also will take up the NLRB’s rule that workers must wait at least six...