* Pensions graphic link: https://tmsnrt.rs/2MVX0FL
* Workers worried about pension contributions, rights (Adds details, quotes)
By Leigh Thomas and Richard Lough
PARIS, Sept 13 (Reuters) - Parisian commuters faced travel misery on Friday as metro workers went on strike over plans to reduce their retirement privileges under President Emmanuel Macron's pension reforms.
Ten out of the 16 metro lines in Paris and two major regional train lines were totally shut as the morning rush hour got under way, leaving commuters scrambling to find alternatives to get to work.
At the Gare Saint-Lazare in central Paris, commuters swarmed off trains operated by the state-run SNCF before stopping in their tracks to consult bus routes on the cell phones.
Long queues backed up at bus stops as traffic was snarled at busy intersections. At the Gare du Nord train station, Europe's busiest, commuters suffered crowded platforms and long waits on the few metro lines running a reduced service.
"I am walking to work today and will be on the streets for at least four hours," Anthony, 21, who works in a restaurant in West Paris, told Reuters on his way to start a shift running nearly to midnight.
Unions want the strike, expected to be the largest since 2007 in Paris, to send a warning to Macron's government as it launches one of the most perilous reforms of his presidency -- to merge France's 42 different pension systems into a single points-based system.
Prime Minister Edouard Philippe promised on Thursday to take the time to listen to unions and broader public opinion after criticism in the past for turning a deaf ear.
"The prime minister's announcements will not have any impact. The strike has been launched and participation will be massive," Frederic Ruiz, who heads the CFE-CGC union at the Paris public transport company, RATP, told Reuters.
'TREADING CAREFULLY'
The government did not waver in the face of rolling strikes last year over a reform of the state rail company, but Macron has since been weakened politically by anti-government protests at the end of 2018 and early this year.
Those protests, which shocked the nation with some of the worst street violence in decades, were triggered by anger over falling living standards and also concerns Macron was pushing his reform agenda too hard.
"When you start messing with the pension system, it's better to tread carefully," Budget Minister Gerald Darmanin told Europe 1 radio.
While promising to be open to external input on the pension reform, Philippe said that he was determined to see through the pension reform plan.