It would be great to set a company-wide limit to how many hours per week an employee can work. A warning when this limit is surpassed could be via a pop-up notification if a manager attempts to schedule an employee over this limit, or more simply with a total number of hours scheduled under the employee's initials on the schedule tab. Additionally, when an employee accepts a shift offer, trade, etc., the manager should see the total number of hours the employee will be scheduled if they approve the request.