The labor and employment specialists at Jackson Lewis have again drawn the ire of the International Brotherhood of Teamsters, with union members mustering this week outside Sotheby’s locations in New York and Philadelphia to protest the law firm’s representation of the famed auction house in an ongoing contract dispute with its art handlers.

The Tuesday protests saw Teamsters members handing out leaflets that read “Jackson Lewis Kills Jobs” and holding banners bearing such slogans as “Jackson Lewis Creates Misery for Sotheby’s Workers.” At issue: Sotheby’s three-month-old lockout of 43 art handlers represented by Teamsters Local 814, according to an International Brotherhood of Teamsters press release.

The Teamsters claim in the release that Sotheby’s “hired Jackson Lewis to attempt to starve its workers into giving up their job security and accepting wage cuts.” According to the union, the art house, with the law firm’s help, is attempting to reduce wages and replace experienced workers with outsourced employees, “despite earning record profits.”

Press representatives at Jackson Lewis and Sotheby’s did not respond to requests for comment. Sotheby’s told Bloomberg that it has offered union employees “a very fair contract” that includes wage increases and improved benefits each year.

The handlers’ last contract expired in early July and the lockout began August 1, according to Artinfo.

This article originally appeared on The Am Law Daily.

In July, Teamster members picketed Jackson Lewis offices in Chicago, Los Angeles, New York, San Francisco, and Seattle to protest the firm’s role in BMW’s decision to lay off 68 employees at a parts-distribution warehouse in Ontario, California.