Starbucks Workers United said Tuesday that 98% of union baristas have voted to authorize a strike as they seek a contract with the coffee giant.

Bargaining delegates are set to return to negotiations with Starbucks on Tuesday in the last scheduled session of the year with the goal of agreeing on a “foundational framework.” Starbucks and Workers United have spent hundreds of hours this year at the bargaining table, and both sides have put forward dozens of tentative agreements, the union…