Though hotel chains say they’ll continue to operate normally, travelers could see disruptions as employees walked off the job in cities from Boston to San Francisco. Here’s what to know.

Over the busy Labor Day weekend, thousands of front-desk workers, housekeepers and other employees at more than a dozen hotels across the country walked off the job on early Sunday after failing to come to an agreement in contract negotiations.

The strikes — which as of Sunday morning were called at hotels in Boston; Greenwich, Conn.; San Francisco; San Jose, Calif.; and Seattle — were scheduled to last three days, just as many travelers’ holiday weekend plans were in full swing. More hotel workers in other cities could also soon announce strikes.

The strike comes as thousands of workers at Hilton, Hyatt, Marriott and Omni roperties across the country — in about 12 cities stretching from Honolulu to Boston — have been engaged

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