Mistakes are a part of life for managers and employees (and every other human on the planet). Of course, mistakes usually result in something that needs to be fixed, which means rework, lost productivity, damaged relationships, and other outcomes that cost money. Since your Company is paying for the mistake anyway, why not get your money’s worth out of it? The best managers use employee mistakes to teach and develop their employees. To think about mistakes solely in terms of the inconvenience and cost incurred is like throwing money away.