A good plan engages employees in a constant conversation about how the business can improve the way things are done and ends up generating happy customers. A really good business plan starts with a detailed who does what and why and ends up with everyone knowing exactly what to do, why and when.
The most effective way to improve a business is to examine everything the business does in detail and then plan every detail thoroughly to maximize the use of every resource, both financial and human.
Operating business plans help managers delegate every task and have someone take full responsibility for task completion on time.