Yes. Employees who regularly work upwards of three hours a night between 11 pm and 6 am will be classified as night workers. Night workers may not work more than eight hours a night, averaged over 17 weeks (or more than eight hours in any night in hazardous occupations, where no average applies). They must be offered a free health assessment before they start working nights, and further free health assessments regularly thereafter. In many cases, once a year would be appropriate.
