Who said "A professional does his job without being told twice."?

This quote is attributed to Mike Ehrmantraut.

A professional does his job without being told twice. - Mike Ehrmantraut

"A professional does his job without being told twice."

Mike Ehrmantraut Work

"A man provides. And he does it even when he's not appreciated or respected or even loved. He simply bears up and he does it. Because he's a man."

"No more half measures."

"I am the man who gets things done."

"You know what business is, boy? It's all about relationships."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."