One in five flights were canceled at Paris airports and other flights faced delays as air traffic controllers staged a walkout and taxi drivers disrupted roads. I-Tele television reported that a taxi driver was injured at Orly Airport while trying to block a bus entrance.
Some teachers and other public servants are also on strike over a range of issues including wages, education reforms and working conditions. It's the latest challenge to Francois Hollande's Socialist government and its stop-and-start efforts to modernize the economy.
Dozens of taxi drivers tried to march from the Porte Maillot intersection onto an eight-lane bypass, but police pushed them back with tear gas. Some drivers set pre-dawn bonfires put out by firefighters Tuesday morning.
Traditional taxi drivers are protesting what they consider unfair competition from Uber, which has faced a string of legal challenges in France. Previous protests have also turned violent.
Uber drivers "vandalize professionals who are paying taxes, who respect the rules," said Rachid Boudjema, 37, president of the taxi drivers union in Marseille, where striking drivers caused traffic jams around the city and its Marignane airport. He described "American cowboys" who "want to destroy our system, the system we are all attached to."