07:11 AM EDT, 09/13/2024 (MT Newswires) -- (Updates with comment from Boeing ( BA ) in the fourth paragraph and latest stock movements in the last paragraph)

Boeing's ( BA ) labor troubles continued after union rank-and-file on Thursday rejected a tentative contract proposal negotiated by the company and the union leadership and opted to go on strike.

The International Association of Machinists and Aerospace Workers said on its website that 94.6% of the 30,000 Boeing ( BA ) workers voted to reject the contract and 96% voted in favor of a labor action.

The union said its negotiating team "will regroup and begin planning the next steps on securing an agreement that our membership can approve."

Boeing ( BA ) said in a statement that it was clear the tentative agreement was unacceptable to its workers. "We remain committed to resetting our relationship with our employees and the union, and we are ready to get back to the table to reach a new agreement," the company said.

Shares of the plane maker were down nearly 4% in Friday's premarket activity.

Price: 156.49, Change: -6.28, Percent Change: -3.86