Hiring is something that has to be proactive. Your HR team has some info that you may not be privy to. For instance if you have 4 team members on final warnings, you cannot wait until they are out the door to replace them. Granted you hopefully will be able to course correct them, but not always. There may be team members who have cut their available hours down, especially with the start of school. Before they may have been able to work 30 hours a week but now need to cut back to 15. This may not go into effect for 3 weeks, but you can't wait until then to get them on board. Can you imagine trying to close a store with all new team members or stock with 10 new team members. We have been there and it isn't pretty for them or you. It is a balancing act that HR is always working on, having enough team members to cover the available hours vs cutting available team members hours.