A strike by German train drivers is expected to be longer than any other previous walkout, while the UK could face severe delays on Bank Holiday Monday if the train strike is not averted.
Although the two events are unrelated, strikes have been planned across Germany and the UK due to working conditions and pay increase requests.
The next strike by German train drivers’ union GDL will likely include holiday weekends, according to a union representative.
The union is expected to announce the times and dates for the next walkout at a press conference in Berlin on Monday afternoon.
It would be the ninth stoppage in a long-running dispute between GDL and state-owned Deutsche Bahn over work conditions.
A seven-day strike by drivers earlier this month was the longest in Deutsche Bahn's history. It caused major disruption in a country where upwards of 5.5 million people use the train network every day.
In the UK, the Rail, Maritime and Transport (RMT) union is planning a 24-hour walkout from 5pm on next Monday and a 48-hour ban on overtime. The union is warning that National Rail services will be at a standstill on Tuesday morning if the strike goes ahead.
Union bosses turned down the offer of a one-off £500 payment to staff and three years' worth of rises in line with inflation, as well as a 'no compulsory redundancy' commitment until December 2016.
Members of the Transport Salaried Staffs' Association (TSSA) have also voted for a strike.
Union leaders were meeting Network Rail (NR) bosses for talks under the chairmanship of the conciliation service Acas.
TSSA members will also strike for 24 hours from 5pm on Bank Holiday Monday, with an overtime ban from Tuesday, if the Acas talks fail.