The group of young men was greeted with drums, loudspeakers, and dancing as they poured out of the exit of the gleaming Porte de La Chapelle Arena in northern Paris on a Tuesday evening in late October. “On a gagné,” one of them cried — “We won.”

These weren’t athletes celebrating a victory. Rather, they were undocumented immigrants who had just won a major concession from Bouygues, the construction company building the eight-thousand-person-capacity stadium slated to host events for next summer’s 2024 Paris Olympics.

After twelve hours of negotiations, which lasted from early morning until around 8:00 p.m., roughly two hundred strikers, union representatives, and activists inked an agreement with Paris city hall and Bouygues allowing for the regularization of all undocumented workers who had been hired to work on the arena. The deal also includes workers previously let go by the subcontractor in charge of finishing work on the site by the end of the year.