UPDATE: On November 22, the following strikes will impact air travel across Italy; Airport staff of the main unions; Air traffic controllers from 1pm to 5 pm; Alitalia staff from 1 pm to 5 pm; Meridiana Fly staff from 1 pm to 5 pm; Milan Airports – SEA Handling employees which provides ground handling services for passenger and cargo flights at Linate and Malpensa airports in Milan, will participate in a 24-hour strike from 00:01 on Nov. 22. Scheduled services at the Bari Karol Wojtyla Airport will not be impacted by this action. Recommended to reconfirm flights if travelling on November 22, as disruptions, including delays and cancellations of flights should be anticipated.
http://www.slowtrav.com/blog/italy_transport_strikes/