The Fair Labor Standards Act does require overtime pay for non-exempt employees after 40 hours, but it doesn't actually set a cap on the number of overtime hours an employee can work. However, some states have their own laws limiting overtime hours, so it's worth checking your state's specific regulations. From a safety perspective, excessive overtime can be a concern, as it can lead to employee burnout and increased risk of accidents. Your HR department should be monitoring overtime hours to ensure they're not excessive and taking steps to prevent employee fatigue, such as encouraging time off or providing resources for managing workload.