Meaning
Production metric measures the actual duration an operator physically manipulates a product during assembly or testing. The direct labor touch time excludes wait times, queue durations, and material transport delays. This measurement applies only to manual work instructions and ends when the operator completes the designated step.
Measurement Protocol
Technicians capture this duration using video analysis or digital logging during the initial pilot runs. The direct labor touch time defines the baseline for standard work instructions on the assembly line. Every touchpoint is recorded, starting from the moment a worker picks up a printed circuit board to the point it is secured in the test fixture.
Engineers use these records to identify manual bottlenecks and eliminate awkward hand movements that slow down production.
Assembly Efficiency
Efficiency drops when workers spend time fetching tools or unpacking materials instead of assembling boards. Reducing direct labor touch time through optimized workstation layout directly lowers the manufacturing cost per unit. This reduction requires structured workstations where tools sit within the reach of the assembler.
Cost Allocation
Sourcing teams use this labor metric to build accurate assembly cost models for high-volume manufacturing. When a vendor quotes a product, the labor charge depends heavily on the logged touch duration. This dependency helps managers compare the manual assembly expenses of different factories before awarding contracts.
