We will update customers on strike action as soon as we have any further information.
Meanwhile, teachers, their pay frozen in the budget, have been on strike for nearly a month.
It goes on strike when it is attacked or when the rules are unclear.
And Germany's Lufthansa, whose ground crew and cabin staff are on strike over pay, fell 3%.
Earlier this week, almost 2, 000 officers went on strike to demand better pay and working conditions.
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In 1981, the federal government began firing air traffic controllers who had gone out on strike.
In 1984, the coal miners union of Arthur Scargill went on strike for nearly a year.
Merchants recently went on strike in several cities, including Tehran, over higher sales taxes.
When Philippine Airlines workers went on strike last year, he didn't side with labor.
Under current law, when workers go on strike, a company may bring in replacements.
Staff at two Coventry schools are on strike over plans to turn their institutions into academies.
He was assassinated in Memphis on April 4, 1968, while helping lead sanitation workers on strike.
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Health workers in the north-east of England are on strike over changes to their travel costs.
If Delphi demands too much, they may force the UAW to go on strike.
Iberia pilots last year went on strike when Iberia created a low-cost carrier called Iberia Express.
EU's powerful staff unions, which have gone on strike to block even the discussion of reforms.
In 2002 its workers went on strike to try to force him from office.
The situation in agency-backed MBS is even worse, with foreign buyers all but on strike.
That makes it all the more worrying that consumers now appear to have gone on strike.
When UNRWA suspended a union leader for suspected Hamas activity, staff went on strike.
To complicate matters, the police briefly went on strike, and several unions called a one-day strike.
Its reports suggested that more that 90% of its 30, 000 members were on strike.
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In Sri Lanka district and magistrate court judges went on strike for two days in protest.
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Indeed, doctors have become the latest group threatening to go on strike unless their pay is increased.
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Tommy Sheridan (Leader of the SSP, Glasgow) brought up the issue of nursery nurses currently on strike.
He denied having a strategy to force workers out on strike purely so he could fire them.
Construction workers building a power station in Cheshire have gone on strike due to "inadequate on-site facilities".
Already, taxi drivers have gone on strike in Paris and elsewhere as a pre-emptive move against deregulation.
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Unite said more than 650 of its members at Dagenham would vote on strike action in coming weeks.
Employing extra people to do the work of staff who are on strike is illegal under employment law.
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