40% of TGV and TER trains have been cancelled on Christmas Eve as transport workers protest pension reform.
Labour union CGT said on Thursday there would be no break in transport strikes over the Christmas period unless the government backed down on pension reform.
The interior ministry said roughly 800,000 people protested, whereas the CGT trade union put their estimate at 1.5 million.
Airport workers have joined a solidarity strike on behalf of 9,000 postal service employees who have been on a two-week strike over pay.
The strike is a "big shot of anger" at "purely budgetary logics which should not apply to childcare," a spokesperson for the movement told Euronews.
"Exhausted caregivers = endangered patients", "Public hospitals in life-threatening emergency" were some of the protesters' mottos.
Subway workers are protesting against the president's plan to overhaul France's pension system.
Truck drivers in Portugal are striking over pay conditions and authorities in the country are predicting food shortages and the possibility of petrol stations running out of fuel.
The industrial action is due to begin Wednesday evening local time and continue into Thursday. Airlines have been instructed to reduce flights to affected airports.
This year's official theme is #BalanceforBetter - but there are many unofficial events taking place too.
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Cabin crews in Germany, Belgium, Portugal, the Netherlands, Spain and Italy, as well as pilots in Germany, staged a 24-hour walkout on Friday
It's a breakthrough that sent its shares sharply higher, over 5 percent, as the budget airline strives to quell staff protests around Europe
Ryanair pilots across Europe staged their first simultaneous strike as they ramped up a battle for better pay and conditions, plunging tens of thousands of passengers into travel chaos during the busy summer.
Low-cost airline Ryanair has been forced to cancel hundreds of flights due to 24 walk-out by pilots in five countries
Ryanair pilots in Germany are striking for 24 hours today and forcing the cancellation of 250 flights, reaching a Europewide total of 400 cancellations.
This adds to industrial action already planned for today in Ireland, Sweden, Belgium and the Netherlands.
The strike is over pay and conditions.
It comes as the Irish airline has warned its investors of more strikes and weaker ticket prices this summer
More than 2,600 flights were cancelled in April, May and June and Easyjet argued that EU law was being breached after flights were not protected over France
Cabin crews working for budget airline Ryanair are to stage a walkout in Portugal, Italy, Spain and Belgium on July 25. A pilot strike is also due to go ahead on July 12.
A new report says strikes and outdated equipment costs airlines €300 million and accounts for 33 percent of delays.
French Senate approves lower house's measures that will end jobs-for-life, early retirement, and annual pay rises, but the unions promise more strike action.
Euronews speaks to one striker to understand what they are fighting for,
It's in retaliation after militants fired rockets on Saturday on Israel
Since 2009 the country has implemented large cuts in pensions and tax increases in return for international loans worth 260 billion euros
Euronews brings you the latest news and updates as it happens this morning.