The period of time over which a task takes place, in contrast to effort, which is the amount of labor hours a task requires. Duration establishes the schedule for a project. Effort establishes the labor costs. Each task in a project has a duration, usually specified in work days or portions of work days, that may or may not be different than the amount of effort (or labor) required to complete the task.


Other Definitions

Duration – The calendar time it takes to create a deliverable. (Wideman Comparative Glossary of Common Project Management Terms v2.1)

Duration -The Amount of elapsed time an activity is estimated to take. (Critical Chain Project Management
by Lawrence P. Leach

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J. Jerrald Hayes
I am ex-architectural woodworker and general contractor turned IT, Business and Project Management consultant, software developer wannabe senior division triathlete and ski racer, Yankee fan and founder of, 360 Difference, and now too.
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