What are the Advantages of span of control in the organization?

"Span of control" refers to the number of workers a manager can reasonably supervise. A lot depends on the willingness and dedication of the workers (dedicated workers might not need as much supervision as prison inmates) and a lot might depend on the changes in technology of an industry ( a blacksmith not needing as much supervision as a currency trader) and a lot might depend on the damage the employees can do to the business if they screw up (currency traders versus blacksmiths again, unless the blacksmith is shoeing Kentucky derby value horses.