Hundreds of thousands of students have marched through French cities in fresh protests against the disputed First Employment Contract.
Rail workers and teachers have also staged one-day sympathy strikes against the proposed labour law.
Police put the national turnout at just over one million, slightly down on last week.
In Paris and the western city of Rennes, police used teargas on hundreds of youths hurling bottles and stones in a repeat of last week's violence.
The clashes have continued this evening and police in Paris say at least 200 people have been arrested.
President Jacques Chirac's conservatives have stopped short of agreeing to scrap the law, but faced with sliding poll ratings and internal rifts over how to deal with the protests, further concessions have been hinted.
There has been widespread transport disruption, and Ryanair has cancelled all its flights into and out of France.
Aer Lingus said it would not be cancelling any of its scheduled services but warned its flights to and from France may be delayed.