Water beetle or water spider is a term used to describe the person responsible for maintaining correct inventories on the production line so that line employees have no need to stop working. The term stems from the fast movement of this employee as they check stock levels and resupply each station as necessary.

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Tracy O'Rourke

Tracy is a Managing Partner & Executive Advisor at GoLeanSixSigma.com. For almost 20 years, she's helped leading organizations like Washington State, Cisco and GE build problem-solving muscles with Lean Six Sigma to achieve their goals.