Ask almost any veteran management-side labor attorney about the current National Labor Relations Board (NLRB) and he will make two points: First, the board always shifts from favoring business to favoring unions when control of the White House changes, and second, the current board has made an unusually sharp shift to the left.

“The NLRB has traditionally swung a pendulum back and forth depending on which party is in power, and that’s historical back to the founding of the NLRB,” says Charles Caulkins, a partner at Fisher & Phillips.