Table :

TABLE 18.1 The Marginal Product of Labor

Number of Janitors

Task

Marginal Product of Labor (MPL per hour)

One

Clean restrooms, once a day.

$35

Two

Empty trash.

$30

Three

Clean restrooms, second time in a day.

$24

Four

Wash floors.

$20

Five

Pick up outside trash.

$16

Six

Clean restrooms, third time in a day.

$12

Seven

Clean windows.

$11

Eight

Remove gum from the bottom of tables.

$8