Travel chaos will hit the London Underground after Tube drivers voted to hold four strikes, starting on Boxing Day.
A further three strikes will be held on January 16, February 3 and February 13.
Aslef balloted its 2,200 members after London Underground bosses refused to give them triple pay – equivalent to £366 – and a day off for working the bank holiday.
The union claims 92.3% voted in favour of the action.
A statement on the Aslef website said: “The whole dispute has been about seeking equitable quality time off for our members but recognising those who do operate the service may need to be incentivised.
“The company is currently offering no additional payments for working on Boxing Day.”
The union wants working on Boxing Day to be voluntary and says its members may need “substantial incentives” to volunteer.
Tube drivers currently earn a basic salary of £45,545 – around £122 a day.
Business leaders have warned the retail industry cannot afford to lose trade on the first day of the Boxing Day sales, the Evening Standard Reported.