Three employment groups filed lawsuits against the National Labor Relations Board, saying it overstepped its bounds when it set new regulations requiring employers to hang posters informing employees that they have the legal right to form unions.

“It is symbolic of the (NLRB’s) ping-ponging jurisprudence that isn’t doing anybody any good,” said Daniel V. Johns, a labor and employment partner at Ballard Spahr. “This may be a small thing, but it stands for a big thing. There’s an old saying: You allow the camel’s nose under the tent, and soon you’re shoveling camel manure. That’s what we’re looking at. On one level, this is ridiculous, but if you lose those little things, you can lose the big things.”