Downtime is the ultimate disruption in productivity. It not only limits how much can be produced in a day, it also drains the energy and morale of your production teams. When you look at downtime, you have to consider the time that the machine spent down - and the loss in rate while approaching shutdown and starting back up. You can calculate your total labor cost per hour and easily add up what it cost your business for every hour of accumulated downtime. These are the more apparent costs of downtime.