Like any specialized tool, many employees have become useful for only one thing. This presents a real problem for workers who get laid off or fired, because finding another job with a specialized skill set can be a difficult task.
A side effect of this problem is an increasing dependence on our interconnected system. Necessities like food and water are expected to always be provided and available at the local Wal-Mart in exchange for the dollars earned performing a totally unrelated task. While this type of monetary system is inevitable in an advanced society to some degree, the dominance of large companies over local businesses creates an extremely dangerous situation.