The Seven Wastes Check-sheet is extremely useful when taking a waste walk through the company - whether through the offices or production areas.
The wastes you observe can be placed right where they belong, in the appropriate places on the spreadsheet, as some triggers on the sheet remind you of what each type of waste involves.
It can be used by every employee and the data thus collected can be used to plan future kaizen events.
If it is one thing you need to focus your attention on, this is it: seeing the wastes and their root causes.