The labor movement added 273,000 members, but couldn’t keep pace with nonunion job growth.
They are seeking a rare order that would force Starbucks to bargain with workers at a Florida store where the union lost an election.
The strike will be the longest in the year-old unionization campaign.
The strike is expected to be the largest labor action since a campaign to unionize the company’s stores began late last year.
In a letter to CEO Howard Schultz, lawmakers called on the company to “stop these appalling and retaliatory practices.”
A regional director for the National Labor Relations Board says that the closure was retaliatory and Starbucks should have to reopen the store.
They say their reputations were hurt by a manager’s claim that they refused to let her leave the store during a workplace protest.
Starbucks plans to spend $450 million next year to make its North American stores more efficient and less complex.
The seven will get their jobs back after the Seattle-based coffee giant lost an appeal of a lower court’s order to reinstate them.
Companies can use multiple tactics to stop their employees from organizing.