( CNN ) -- Passengers traveling on Air France may face more delays as the airline prepares to cancel more flights due to a strike by aviation workers , a statement on the airline 's website said Tuesday . Workers , including pilots and flight attendants , have called for a four-day strike to protest a draft law that they say will curtail their right to strike . The work stoppage began Monday . Despite the walk-out , Air France said it was able to operate more than 70 % of its long-haul flights , but on Wednesday , the statement lowers that number to 60 % . Still , several passengers were caught off-guard by the strike . Amelie Straub waited for an hour for her flight to Brazil Monday night before she was told that it was canceled . When the 26-year-old returned to Charles de Gaulle airport Tuesday morning , she still did n't know whether she would be booked on a flight out of Paris . Straub said she 's not upset about the strike , but called Air France 's handling of the walkout `` unacceptable . '' `` What the crew did last night , I think that 's unacceptable , '' she said . `` I do n't think we should ban the right to strike , but it should be controlled and we should be given ample warning . '' Beatrice Lestic , a general coordinator for the transportation unions in France , said that 60 % of pilots were on strike Tuesday , and she expects the number to increase Wednesday . Lestic says Air France employees are against proposed legislation that would require workers to provide a 48-hour notice before they strike . `` Since the arrival of the proposed law , the intentions of government and businesses are clear : removing all means of dissent from air travel personnel , '' the main pilot union , SNPL , said . `` Let there be no mistake : in the light of the government and businesses ' will to muzzle airline pilots , we must speak with one voice , '' the union added . In addition to the cancellations of long haul flights -- flights involving long distances , such as international ones -- Air France said more than a quarter of its remaining scheduled flights are not expected to get off the ground Tuesday . It advised passengers to postpone trips until after Friday . CNN 's Umaro Djau contributed to this report .
NEW : Air France says despite strike , 70 % of long-haul service was in operation . Comment: The workers are protesting a draft law that requires a 48-hour notice before a strike .