Oregon's largest hospital system cited the length of the strike in a notice to nurses who've walked out from eight hospitals. The union accused Providence of delaying after members voted down a tentative deal.

Providence Health & Services in Oregon warned striking nurses Thursday that their health insurance will expire at the end of the month if their walkout continues. The strike, which began Jan. 10, has now lasted 36 days and involves nearly 5,000 nurses at all eight Providence hospitals across the state.

Providence Health may cut health insurance for striking nurses if the strike continues past the end of February.

About 82% of the Oregon Nurses Association’s bargaining unit voted against a tentative agreement with Providence last week.

Nurses on strike at eight Providence hospitals in Oregon have rejected tentative agreements that would have ended the largest health care workers’ strike in state history.

Nurses have been on strike at Providence hospitals since Jan. 10, including Providence Medford, pictured. Providence management has told nearly 5,000 striking employees they will lose health benefits by the end of the month if the do not return to work.

Providence Health & Services has issued a warning to striking nurses, stating that healthcare benefits for them and their families will be terminated.