[Hasu]

If the aggregate across all employees is negative, the company is losing money. If the aggregate over all employees is positive, you have profit.

It's like that old joke about marketing budgets: half is wasted, but it's impossible to tell which half. The same can be true for employees, maybe half your employees lose money, but the other half make enough that you're profitable, but you can't attribute every dollar that comes into your company to the specific employee that generated that dollar.