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Summary Metrics: Time Percent Activity Value Stream Mapping in Office & Service Setttings

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Summary Metrics: Time
Percent Activity (%Act) (also referred to as
Activity Ratio)








The percentage of time anything is being done
to the work passing through the system (whether
value-adding or non-value-adding)
%Act = (∑PT ÷ ∑LT) × 100
100 – %Act = % Time Work is Idle
Common finding = 1-10%
Could also calculate %VA to show much activity
is value-adding – is typically lower than % Act.

© 2010 Karen Martin & Associates

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Published in: Business, Technology
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