Steel erectors working on the construction site for Heathrow’s Terminal Five have threatened airports operator BAA with strike action.
About 150 workers, employed by Severfield-Rowen subsidiary Watson Steel and four smaller contractors, have voted overwhelmingly to strike following a dispute about travel allowances.
The threat comes after BAA refused to match an extra £1 an hour bonus being paid to electricians, according to the Daily Telegraph.
But the employer argued that offering money would contravene the national agreement, known as Naeci, covering steel erectors.
Most of the workers involved in the threat to strike belong to the Amicus union. Arbitration service Acas has been called in.
BAA said that most of the major steel erection at the site had been completed.