Paris police on Saturday banned protests at the capital's Place de la Concorde across the Seine river from parliament, after clashes there the previous two nights between some demonstrators and police.
It said it was doing so "due to serious risks of disturbances to public order".
But people marched in other parts of the country after unions called for a weekend of protests.
In the eastern town of Besancon, some 300 people gathered on Saturday morning, an AFP reporter said.
Among them, Nathalie, a woman in her thirties, threw her voter registration card into a fire.
"I elected my member of parliament but he's been deprived of his right to vote. We're in the middle of a denial of democracy," she said, refusing to give her surname.
CGT union boss Philippe Martinez marched among some 200 people in the town of Meaux outside Paris.
Others rallied in the northern port city of Le Havre.
"Macron, already deaf at 45 years old?" read one sign on the back of a protester's jacket.
Unions have called for another day of nationwide strikes and rallies on Thursday.
Thousands of people rallied in the capital's Place de la Concorde on Friday to vent their frustration at the government imposing the reform, despite two months of strikes and demonstrations against the change.
Police moved in to disperse the crowd at nightfall, after a fire was lit in Place de la Concorde, AFP journalists said.
Groups of people threw bottles and fireworks at the security forces, who responded by firing tear gas to try to clear the square. Police said they made 61 arrests.
In the southeastern city of Lyon, demonstrators tried to break into a town hall and set fire to the building, said police, who reported 36 arrests.
Opinion polls have shown around two-thirds of French people oppose the reform, which is also to require people to work longer for a full pension.
The government has said it is necessary to avoid the system from slipping into deficit, and bring France into line with its European neighbours where the legal retirement age is typically later in life.
But critics say the changes are unfair for people who start working at a young age in physically tough jobs, and women who interrupt their careers to raise children.
Protests since mid-January have garnered some of the largest crowds in decades, but the popular movement seemed to be starting to wane in the days before the government imposed the bill.
The capital's municipal rubbish collectors have however kept up a rolling strike, leaving an estimated 10,000 tonnes of trash festering in the streets by Friday.
A union representative however on Saturday said that strikers at three incinerators outside Paris would let some garbage trucks through "to limit the risk of an epidemic".
In the energy sector, the CGT union has said strikers would halt production at two refineries by this weekend or Monday at the latest.
Unions from national train operator SNCF on Friday urged workers to continue another continuous strike that has caused major disruption on the network.
Macron put the pension reform at the centre of his re-election campaign last year.
But the former banker lost his parliamentary majority in June after elections for the National Assembly.
The government used the controversial article 49.3 of the constitution on Thursday as it feared not having enough backing in the lower house to win a vote on the pensions bill.
But prime minister Elisabeth Borne's cabinet is largely expected to survive any no-confidence vote.