From my “Murphy’s Law” desk calendar archives thanks to Aunt Evelyn, Uncle Pipey, and cousin Nancy:

Grogan’s Law of Supervision: The primary responsibility of a supervisor is to discover what his employees are doing…and stop them.

Goofy guy’s observation concerning Grogan’s Law of Supervision: There are long list of reasons why this law should be observed and a long list of reasons why this law should not be observed.