An hour?
A work week?
A month?
The output?
Time has seconds (defined in terms of the radiation frequency at which atoms of the element cesium change from one state to another).
Days has hours (a culmination of seconds into minutes and minutes into hours or 3600 secs)
Distance has meters (defined as the length of the path travelled by light in a vacuum in 1/299 792 458 of a second).
What is it for productivity?
