Katie Johnston Chase reported in the Boston Globe that a Legislature hearing is set for last Wednesday on revising the tips law aimed at quick-service Dunkin’ Donuts franchise owners are pushing for a change in state law that would allow shift supervisors to share in tip pools with crew members.

Store owners say existing law contains ambiguous language about who is eligible to receive tips, making owners vulnerable to lawsuits over how the money is shared. But workers argue that making supervisors part of the tip pool dilutes crew members’ pay and allows owners to pay supervisors less by offsetting lower salaries with tip earnings.

“Employers want to use the tip pool to fund as many managers as they can, because it will reduce their labor costs,’’ said Shannon Liss-Riordan, a lawyer representing Dunkin’ Donuts workers in a class-action lawsuit that seeks to keep supervisors and managers from sharing tips.

But shift supervisors often work side by side with the crew and should be eligible for tips, said Jim Coen, president of DD Independent Franchise Owners Inc., a Bellingham trade group that represents owners of 2,700 Dunkin’ Donuts shops. Shift supervisors generally earn only about 50 cents to $1 an hour more than crew members, Coen said, and don’t have much authority beyond creating the schedule and assigning work.

“That person very often is the one giving you your coffee,’’ he said. “They’re playing a role in the crew, so they should share in the tips.’’

Coen, of the franchise owners’ group, said the proposed changes would only apply to shift supervisors and make it clear that store managers are not eligible for tips.