(LtoR) Mark Gaston Pearce, Sharon Block, and Richard F. Griffin Jr. of the National Labor Relations Board in an undated combination image courtesy of the NLRB

 
(LtoR) Mark Gaston Pearce, Sharon Block, and Richard F. Griffin Jr. of the National Labor Relations Board in an undated combination image courtesy of the NLRB
(LtoR) Mark Gaston Pearce, Sharon Block, and Richard F. Griffin Jr. of the National Labor Relations Board in an undated combination image courtesy of the NLRB. REUTERS/Handout