Huge numbers of civil servants and students are expected to join striking transport workers as
Postal workers, teachers, air traffic controllers and hospital staff around the country are preparing to protest against planned pay and job cuts.
Students are also upset over plans to grant universities more autonomy.
The combined protests are the latest challenge to President Nicolas Sarkozy's plans to reform the economy.
Transport workers are beginning the seventh day of an indefinite strike in protest at planned pension cuts.
And many of the latest strikers oppose government plans to not replace half of civil servants as they retire.
Students, some of whom have been blocking buildings at dozens of campuses across
The latest one-day walkout was planned separately from the ongoing transport workers' strike.
That was triggered by plans to scrap "special" pensions privileges enjoyed by 500,000 workers, mainly in the rail and energy sectors, as well as by 1.1 million pensioners.
Tough times
On Monday, the transport unions voted to extend the walkout, though the number of strikers has reportedly been dropping since the strike began last Tuesday.
Finance Minister Christine Lagarde said the job action was costing
However, half of the country's high-speed TGV trains are expected to operate on Tuesday, said national rail operator SNCF.
Eurostar trains between
But commuter trains, metro and bus services in
Despite the vote by transport unions to extend their strike, there has been some movement towards negotiations.
Unions have agreed to attend negotiations with the state rail company management on Wednesday.
The government has somewhat relaxed its earlier stance that it would not enter talks unless strikers return to work.
On Monday, Prime Minister Francois Fillon said rail traffic must "progressively restart" for talks to take place.
But he remained firm on the government's commitment to overhaul the French economy.
"The government will not be able to budge on the principles because it has a mandate to move this reform forward," Mr Fillon said.
Opinion polls have so far suggested that there is broad support for Mr Sarkozy, who says
Passengers wait in a train in Paris Gare du Nord subway station. [AFP]
BBC