For most industries, New York does not limit the number of hours an employer can require an employee to work in a day or at specific times if the employee is over 18. However, certain industries must provide employees with at least a 24-hour break once each calendar week, preventing mandatory overtime that infringes on this day of rest. Employees can voluntarily work on their day of rest for overtime, but it cannot be required. Nurses have a special exemption from mandatory overtime beyond their scheduled hours, including pre-scheduled on-call hours.