In Denmark, a strike by ground crew at Copenhagen's international airport has forced the cancellation of more than 100 flights. Other flights, mostly to European destinations, suffered lengthy delays as baggage handlers and refueling staff staged a nine-hour walkout. The action was to protest against changes in employment law, which union bosses fear will hit workers' rights.

Scandinavian Airlines (SAS) cancelled more than 100 flights throughout the day, and it was not until 3 p.m. that the air traffic was back to normal.

New laws will enable employers to force full-time workers into part-time positions, break down the minimum wage and force refugees and immigrants to work for free.

The airport strike began around 6 a.m. Wednesday morning when 500 SAS workers did not turn up for their shifts. They were joined by a further 1,000 employees throughout the day.

The Danish employers Association (DA) reported that about 4,300 LO union members went on strike.