Workers at Marathon Petroleum’s refinery in Texas have voted to continue to strike after a contract proposal was rejected.
The staff, who work out of the company’s base at Galveston Bay, voted by a secret ballot earlier this week.
Almost 900 striking workers had voted, with the proposal for the contract overwhelmingly rejected.
A union official said the proposal sought to remove too many protections from the more than 1,000 members on strike.
The strike first began in February as part of the largest walkout by US refinery and chemical plant workers in 35 years.
The national stoppage spread to 15 plants, including 12 refineries that account for one-fifth of US capacity.
In addition to the Marathon Galveston Bay strike, workers remain on strike at the Toledo, Ohio refinery co-owned by BP and Husky Energy.
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