Hardline French unions on Wednesday kept up a series of wildcat strikes aimed at ratcheting up pressure on the government before it presents the final version of a pension reform that has prompted France’s biggest labour protest in decades.

The government will unveil the revised pensions overhaul at a cabinet meeting Friday before submitting the draft law to parliament for debate set to begin on February 17. “It’s going to be Friday or never,” Philippe Martinez of the hardline CGT union told BFM television on Friday.

Union leaders launched a crippling train and metro strike against the reforms last month, but those disruptions have largely ended after officials dropped plans — temporarily at least — to extend the age for a full pension to 64 from 62.

But opposition has since shifted to more radical actions such as power cuts and port blockades, as well as mass occupations of the headquarters of the moderate CFDT union by more militant rivals.

Strikers from the CGT’s energy branch have also halted output at France’s biggest hydro-electric plant, at Grand’Maison in the Alps, following a series of cuts that have interrupted power to thousands of homes and businesses.

Prosecutors said two union workers at national grid operator Enedis in the Dordogne region had been detained for questioning over the power outages, which officials say could have put ordinary people’s lives in danger.

Prosecutors also said Wednesday that Finance Minister Bruno Le Maire and Budget Minister Gerard Darmanin have received death threats over the pension reform.

A letter to one of them contained two bullets, with the message: “You must convince… Macron that’s enough, to drop his reform, otherwise it’s a massacre.”

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