Accidents occasionally are associated with a task being performed at a point in time in the sequence of construction that is not safe. While construction is an inherently dangerous process, tradespersons have developed means and methods to minimize the hazards for their task that depend on having certain activities completed before the task is started. Deviations from the safe sequence of tasks can make a task inherently more dangerous because the means and methods do not match well with the actual site conditions at the time. To control this root cause, an entity must first know the safe methods and sequencing for a task. Second, the entity must be able to determine whether the actual sequencing on a specific project is safe. Finally, the entity must be able to control the methods used to perform the task if the sequencing is not safe.