As I have been helping a client set up some basic accruals, they inquired if there was an alert available for times when an employee requests too much time off. I think this would be beneficial to employees and managers. Employees would receive a simple pop-up that may say something along the lines of "The time requested exceeds the available balance. This could potentially result in unpaid time off!" From there, they could either revise their request or choose to submit it anyway. While I understand that many policies allowing paid negative balances exist, this could help the employee be more aware of their current situation, and could help Supervisors by reducing the amount of time having to review individual balances and track Conditionally Approved requests.
I would also like to see this provide employers the option to not allow employees to request more time off than they have available.
Taking this one step further, we would want this to be checking the available balance as of the date being requested off, not the balance effective the current pay period. For example, if I have 40 hours available today, with 40 hours of approved time off later this month, a time off request for July should check:
We would want a prompt to both employees when they make the request AND a prompt to managers when they are reviewing/approving the request.