PORTLAND, Ore. (KOIN) — You can now tip at Burgerville. But they may go on strike at 10 a.m. Wednesday.

Burgerville officials said they’ve redone their point-of-sale system at 13 restaurants and will have all of them redone by the end of September. That revamping allows customers to tip employees if they choose.

Company officials also said they, like other Oregon businesses, has increased minimum wage rates. Whenever the minimum wage workers got a pay hike, so did other Burgerville workers at all levels, officials said.

On April 23, 2018, the Burgerville in Southeast Portland made history when it became the first federally-recognized fast food workers union. Other Burgervilles followed.

“We understand that we are not meeting every employee’s expectations or needs,” company officials said in a statement. “Burgerville has been negotiating with the Burgerville Workers Union on several fronts and will continue to do so in good faith. The union has scheduled a strike for this Wednesday at 10 am, which coincides with a previously scheduled bargaining session between the union and Burgerville.”

So they rescheduled the bargaining session.

Burgerville opened their first store in Vancouver in 1962.