57 year old Alain Robert, stood with both arms aloft after reaching the summit of the 187-metre (613-foot) high tower, which stands in the French capital's business district, La Defense.
Robert told Reuters that he was himself "deeply concerned" by the pension reform plans.
France has been dogged by strikes and street protests for more than a month as unions push back against Macron's drive to streamline the pension system and avert a looming 17 billion euro pension deficit.
Macron's government said on Saturday it was willing to withdraw a proposal to raise the retirement age to break the deadlock with unions.
Robert has climbed more than 100 structures, including the Golden Gate Bridge in San Francisco and the world's tallest building, the Burj al Khalifa in Dubai.
Monday's ascent was the ninth time that Robert had climbed the Total tower.
Robert often climbs without permission and has been arrested on numerous occasions