The economics
What the money is made of
Labour is the biggest line anybody can move weekly, which is why it attracts pressure that belongs elsewhere.
Labour as the Largest Controllable Cost
For most operations, staffing is the biggest line anybody can actually move. What follows from that, including the part that goes wrong.
The Asymmetry: Overstaffing Shows, Understaffing Does Not
The central fact of this subject. One error lands in a report next week and the other lands nowhere, which bends every decision in one direction.
What an Hour Actually Costs
The wage rate is between half and three quarters of it. The rest is predictable and almost never in the manager's figure.
Not All Hours Are Worth the Same
An hour at peak and an hour at the quiet point cost the same and return very differently. Managing the average destroys the distinction.
Fixed, Variable and the Part Nobody Classifies
Some staffing is irreducible, some scales with demand, and a third category is treated as variable when it is not.
Productivity Per Hour Against Cost Per Unit
Two measures that move in opposite directions under the same decision. Knowing which one you are managing determines what you do.
The Budget Line and What It Hides
A labour budget is one number standing for several decisions. Knowing which decisions are inside it is what lets you argue about the right one.