Some striking Providence nurses appeared unwilling to accept the tentative labor agreement reached with the health system this week, raising the possibility that the largest health care strike in Oregon history could continue into a fifth week.

Providence hospitals reached a tentative contract agreement with the health system’s leaders late Tuesday, nearing a possible end to a strike that was in its 26th day.

Providence and nurses at its eight Oregon hospitals have reached a tentative agreement after 26 days of strike

Hundreds of striking workers line the road outside of Providence St. Vincent Medical Center, in Portland, Ore., Jan. 10, 2025. Thousands of workers walked off the job on Friday at all eight Providence hospitals in the state as well as six women’s clinics, including nurses, physicians and advanced practitioners.

Union members still need to ratify the contract. Voting is set to start Thursday morning and end Friday afternoon.