As the company grows, it gets increasingly populated by value maintainers that surround the value creators.

FORBES: Executive Compensation: Before and After the IPO

Aircraft maintainers plan to clear up as much of a backlog of scheduled inspections and maintenance that budgets allow.

NPR: Federal Budget Cuts Ground Air Force Aircraft

But studies like Fiocco's suggest that it may be possible to turn "decliners" into "maintainers" by encouraging social and intellectual engagement.

CNN: Experts reveal best ways to save an aging brain

The DIY (do it yourself) auto repair market has grown along with the auto, truck and motorcycle industry and so have the local shops (maintainers) that do the work for us.

FORBES: O' Reilly Revs Up The Auto DIY Space

"You had bus operators, track workers, signal maintainers reading the newspaper today with a better grasp of what the MTA was going to do with the negotiation than the negotiating committee of the union and the leadership of the union, " he said.

WSJ: Union Terms MTA Tactics 'An Outrage'