Several unions representing aviation workers announced Friday they will join the general strike scheduled for November 24 in Portugal.

Baggage handlers union, cabin staff union and air traffic controllers unions have said they are supporting the protest against the government’s austerity measures.

Portuguese airport operator ANA said passengers expecting to fly after 10:00pm on November 23 or any time the next day should contact their airline or travel agent before heading for any of the airports in Portugal due to a national shutdown.

In October, Portugal’s two main unions, CGTP and UGT, had called for a general strike scheduled for November 24.

The shutdown is a protest against the newly proposed government austerity budget measures for 2012 and 2013 submitted to parliament by Prime Minister Passos Coelho.

CGTP, the country’s largest trade union federation, represents 727,000 workers in 81 unions while UGT, with about 500,000 members, represents 58 unions.

The Portuguese Civil Aviation Pilots Union (SPAC) announced Tuesday an eight-day strike scheduled for 9, 10, 11, and 12 of December, 2011 and 3, 4, 5 and 6 of January 2012.