According to the police statement, the sides held talks on the issue, "which did not lead to an agreement as trade unions categorically refused to hold a static rally, instead proposing alternative routes."
After careful consideration, the police reportedly concluded that these alternative proposals do not allow to meet the necessary safety of persons and property requirements, or to mobilize police forces to the maximum level against the terrorist threat, which has been set at a high level and requires exceptional measures on the national territory.
"In these circumstances, the Police Prefect considers that he has no choice but to prohibit the holding of the event," the statement said.
In recent months, France has been hit by nationwide protests and sporadic strikes over a controversial labor reform bill. Among the reforms proposed by Prime Minister Manuel Valls’ government are highly unpopular attempts to increase daily working hours and simplify firing procedures.
The protests have resulted in disruptions at the country's nuclear power plants, refineries, fuel depots, train services and ports. Scores of people have been injured and detained during clashes between police and the protesters.