Counting hours honestly
Why every result on this site is stated in hours per year, and what that number leaves out.
Every case on the homepage ends in the same unit: hours per year. It's a deliberately boring number.1Money would be more impressive and less honest: it depends on salaries I don't know and overheads nobody agrees on.
Why hours
Hours are the one thing every team can check. Ask anyone how long a task takes and they'll give you a range. Ask how often it happens and they'll give you another. Multiply, and you have a figure the people doing the work recognise.
What the number leaves out
Hours saved is a floor, not a ceiling. It doesn't count the errors that stop happening, the reports that arrive on time, or the person who no longer dreads the last week of the month.2These are real, but they're claims about the future. Hours are a claim about the past, which is easier to verify.
It also doesn't count the hours the automation costs to keep running. Those are small, but they aren't zero, and a fair number subtracts them.