Time Study vs Motion Study: Key Differences for Lean Efficiency
Time Study measures how long a task takes; Motion Study observes the physical movements used to do it.
Shop-floor teams often shout “Let’s do a time-and-motion study!” blending the two. That mix-up happens because both aim to cut waste, yet one watches the clock while the other watches elbows and footsteps.
Key Differences
Time Study uses stopwatches to set standard durations. Motion Study uses video or sketches to redesign body moves. Together they streamline tasks, but they start from opposite angles.
Which One Should You Choose?
Pick Time Study when schedules slip. Pick Motion Study when workers seem to hustle yet still feel strained. Lean teams often run Motion Study first, then lock in the new method with Time Study.
Examples and Daily Life
A barista films latte art to smooth wrist motions (Motion Study), then times the perfected pour (Time Study). Same drink, half the fumbling, happier mornings.
Can I use a phone timer for a Time Study?
Yes, any simple timer works as long as you stay consistent and record each cycle.
Do Motion Studies need special cameras?
No, a basic smartphone camera is enough to spot awkward bends and extra steps.
Which one saves more money?
Neither guarantees savings alone; savings come from acting on what each study reveals.