According to the press release on the website of one of the firms representing the plaintiffs in the case:
The claims were filed on behalf of employees in Massachusetts, Arizona, California, Illinois, Maryland, Michigan, New York, Ohio and Pennsylvania.
Wage-and-hour laws require employers to pay hourly employees for all hours worked. Those same laws require those employers to pay hourly employees 1.5x for overtime hours (those worked over 40 in a workweek). ‘Hours worked’ oftentimes includes time employees spend putting on (donning) and taking off (doffing) protective equipment. Many employers require hourly employees to don and doff off the clock. Under many circumstances, that practice violates state and federal wage-and-hour laws.
https://www.steffanslegal.com/blog/steffans-legal-files-class-action-against-cresco-labs-on-behalf-of-employees-in-nine-states-regarding-unpaid-wages