The Deliveroo meal delivery platform was fined a record 375,000 euros, the maximum provided by law, for "hidden work".
The company was found guilty by the Paris court of having employed independent delivery people rather than paying them between 2015 and 2017.
Read alsoHidden work: Deliveroo sentenced to a fine of 375,000 euros
Two of its successive leaders during this period were also sentenced for “concealed work” to a one-year suspended prison sentence and a fine of 30,000 euros, together with a ban on running a business for five years, suspended.
A third executive, found guilty of "complicity in concealed work", was given a four-month suspended prison sentence and a fine of 10,000 euros.
Another sanction: the platform will have to display this conviction on its mobile application for one month.
"The court observes that the question is not whether the status of self-employed worker is, or not, a satisfactory legal status, but to note that in the present case, it was a question for Deliveroo of a fictitious legal dressing that does not correspond to the reality of the professional exercise of delivery people, ”explained the president of the 31st chamber of the court in rendering her decision.
A spokesperson for the platform said the company was "considering" to appeal the ruling.