The Guardian and Le Monde newspapers reported on Sunday that Uber Technologies Inc broke laws and secretly lobbied politicians as part of an aggressive drive to expand into new markets from 2013 to 2017.
Macron's office told Le Monde that as economy minister at the time he frequently had contact with many companies disrupting the service industry, and that it was appropriate to facilitate the lifting of red tape.
Headed by the anti-capitalist France Insoumise (France Unbowed) party, the left-wing Nupes political alliance said that they would seek a parliamentary investigation into Macron's role in helping the Californian company in France.
"A minister can't be a lobbyist! Light needs to be shone on this case. France cannot be the playground of big private companies," senior France Insoumise lawmaker Alexis Corbiere said on Twitter.
"A minister can't be a lobbyist! Light needs to be shone on this case. France cannot be the playground of big private companies."Alexis Corbiere
Sebastien Chenu, the spokesman for the far-right party Rassemblement National, described Macron as a "lobbyist at the service of foreign private interests, an ideologue of globalization and deregulation."
Macron and Uber
The Guardian reported that while other members of the then-Socialist government had misgivings about Uber's push onto taxis' turf, Macron exchanged text messages with Uber executives, who identified him as a key behind-the-scenes ally.
In response to the Guardian and Le Monde reports, Uber said in a statement: "We have not and will not make excuses for past behavior that is clearly not in line with our present values."
As minister and now as president, Macron has aggressively courted foreign investment and has long been on a first-name basis with many top executives at multinational companies.
Since his party lost its controlling majority in parliamentary elections last month, Macron and his government have come under increased pressure from opposition parties.
His government faced a no-confidence motion on Monday, although it was not expected to pass as the conservative Les Republicains and the Rassemblement National were planning to abstain.