As the issue of employee misclassification gets a shakeout in various courts, workers participating in a Juul-led campaign to overturn San Francisco’s ordinance banning the use of electronic cigarettes have filed a putative class action against the vaping company alleging they were denied overtime pay.

The suit, filed in U.S. District Court for the Northern District of California, claimed that the 450 class members who worked phones banks, canvassed and performed administrative tasks connected with the “Yes on C Campaign” to overturn the city’s ban were misclassified as “independent contractors” by Juul and other defendants.