Last year, NewJeans staged a revolt over strict contracts that challenged the foundations of the K-pop industry. Their case, against the HYBE label ADOR, hinged on the claim they had suffered “significant negligence” at the hands of their employers. ADOR beat them in court and proceeded to fire Danielle Marsh from the band; her lawyer said the label was punishing her for the attempted mutiny. Now, ADOR is pursuing millions in damages from Marsh for breach of contract. But questions remain over the severity of the conditions to which ADOR subjected NewJeans—a battery of brutal training regimes and unusually strict personal terms that are laid out in a new report from The New York Times .

The harsh reality of K-pop contracts is no secret. So notoriously gruelling are the demands on trainee idols that the Korean government has a contract template to forestall the most inhumane conditions. But labels are free to stray from its recommendations, and ADOR made several key changes, multiple experts told The Times .…