Hundreds of union workers walked out of six downtown Chicago hotels on Friday, two days before the Chicago Marathon — a strike covering a fraction of the 46 properties where more than 7,000 employees voted last month to authorize a walkout.

Unite Here Local 1 called the action, and the union warned that 40 more hotels could follow. Contracts expired August 31 at 44 of the 46 properties; the other two also lack agreements. Most workers remain on the job.

Local 1 President Karen Kent declined to specify what would trigger a wider walkout. "We're going to have to do a lot more, whether it's strikes or other actions," she told Skift. Workers at any of the remaining hotels "could be on strike at any moment," she said.

Which properties are struck?

The six-hotel list spans three Marriott-branded properties, two Hilton-branded hotels, and one Millennium property:

• Sheraton Grand Chicago Riverwalk
• The Westin Chicago River North
• The Westin Michigan Avenue Chicago
• Two Hilton-branded hotels
• Millennium Knickerbocker

No Hyatt hotel made the list, despite Hyatt operating the most properties among the 46. Marriott and Hilton both said their hotels have plans to keep operating.

The timing puts the struck inventory directly in the path of one of Chicago's highest-occupancy weekends. Sellers working group and transient business into downtown properties now face operational disruption at flagship upscale and upper-upscale product from three brands during peak compression.

What is the dispute actually about?

A source familiar with the hotels' bargaining position said the stall centers on a clause that would automatically extend Unite Here representation to a signing company's other commonly owned or managed hotels in Illinois, Indiana, Wisconsin, and Iowa. Under that structure, economic terms — wages, health care, pensions, workloads — have not yet been substantively discussed. Local 1 did not respond to a request for comment on that account.

Kent said the hotels are not bargaining as a group, forcing the union to negotiate at multiple tables with "limited progress."

The disagreement over scope matters for anyone modeling multi-state exposure. A four-state representation clause would tie labor agreements to ownership and management footprints rather than single assets, changing how operators in adjacent Midwest markets price and staff their hotels.

Who carries the cost?

The union's public case contrasts members who say they cannot cover rent with the $22.3 billion it estimates Marriott, Hilton, and Hyatt returned to shareholders over three years. That framing, however, blurs a structural split in hotel economics: brand-level buybacks come from fee income, while labor costs sit with owners and operators.

Those owners face tightening margins. Labor accounted for just over half of U.S. hotel operating expenses in 2023, according to CBRE. Lodging Analytics Research & Consulting reports U.S. hotel EBITDA fell 2.4% in 2024 and 4.3% in 2025.

The union's answer to that math is blunt: there is "enough money in this system." Owners see it differently, and the gap between the two positions has produced a strike that is narrow today but authorized across 46 properties.

For travel sellers, the immediate variable is escalation. With no stated trigger for a wider walkout,Kent holding that card, and marathon weekend demand already on the books, the risk is disruption spreading property by property across downtown Chicago's upper-upscale inventory as bargaining continues across separate tables.