From Air France website:
Industrial action called by French civil servants on Thursday, January 31, 2013
An air traffic controllers´ union takes part in the industrial action called by French civil servants on Thursday, January 31, 2013.
We plan to operate all our flights as scheduled.
However some delays could occur.
Information concerning flights on the current day and the following day can be consulted at any time on this website, in the Flight schedules section.
Please note that access time to the airports may be longer.
To be notified personally, we recommend that you check that you have provided your contact details while travelling (mobile phone or email).
This information can be entered on this website through the “View / modify your reservations” section.
We thank you for your understanding.
http://www.airfrance.ca/CA/en/local/information/news/news-air-traffic-air-france.htm