Workers on the London Underground voted to strike on the day after Christmas, or Boxing Day. The union and the Underground were in talks over pay and working conditions, including the union's demand that the workers be paid higher wages for working on Boxing Day, a national holiday. The Underground says it will not pay because of a prior agreement, but that it offered to reduce the number of drivers scheduled to work. The company criticized the union for thee move, but the union says that members voted 9 to 1 in favor of the strike, which is expected to be very disruptive.
See "London Subway Workers to Strike Day After Christmas as Pay Talks Collapse", Chris Spillane, Bloomberg News, December 21, 2010