A Lumper fee is a fee paid for the labour to de-stuff or unload a container. The people that do this work are called lumpers. An example of a lumping company is www.containercrew.com
The short answer...money, of course, right? The longer answer...the "dock" gets a cut of the lumper fee vs. no cut if the driver unloads. That's why drivers are given such a hard time if they want to...
A fee is the price one pays as remuneration for services, specifically payments to a doctor, lawyer, consultant, or other member of a learned profession. Fees usually allow for overhead, wages,...