The bottom falling out means a manager doesn’t have enough people to cover the hours. Or enough people to adequately cover the store hours, or enough decent people. You are forced to cover the hours with people who don’t care about speed of service, upselling, not upsetting customers, or really anything except getting a paycheck. You may recognize these people when you walk into your local McDonalds or Subway. Lifeless, droll people going through the motions of selling and serving.