Concession workers at Fenway Park, which includes 1000 unionized workers that sell beer and souvenirs, cook up ballpark food, run cash registers and more, will vote next month whether to strike.

It would be the concession workers’ first strike at Fenway Park in the ballpark’s history.

Their contract with the food service vendor Aramark expired at the end of last year. Workers with UNITE HERE Local 26have said they’re concerned about the use of automated equipment like self-checkout counters, which will carve into workers’ earnings.

“We don’t mind kind of the idea of technology helping us. But they shouldn’t become us,” said Natalie Greening, who sells beer at Fenway Park.

According to the union, Fenway concession workers currently earn less than $20 an hour.

The union said ballparks that are home to the Miami Marlins and the Seattle Mariners pay their concessions workers and warehouse attendants more, even though the cost of living in Boston is higher.

UNITE HERE and Aramark began bargaining earlier this year, but the union says they’re currently far apart on an agreement. Aramark did not immediately respond to requests for comment.

Authorizing a strike gives the employees leverage for improved wages and benefits, one expert said.

“It would be hard to imagine going to events at these facilities without food, beverages or souvenirs,” said David Farrag, an attorney and labor professor at Suffolk University’s school of management. “Hopefully, both sides will continue to bargain in good faith and have a mutually agreeable contract.”

Ramon Suarez, a warehouse attendant who works at Fenway almost year-round, is fighting for a pay increase because he struggles to afford his monthly bills.

“I like the purpose and camaraderie in my job. I’m known as the ‘David Ortiz of the warehouse,’” he said.

Suarez said he wants to keep working there because “Fenway Park is part of Boston’s foundation. Inside and outside the ballpark, people come and look for me, and I enjoy helping them out with a smile on my face.”

The Fenway workers’ strike authorization vote is set for June 13-15 during a Red Sox homestand against the New York Yankees.

GBH News’ Esteban Bustillos contributed to this story.