The amount of time a task has been delayed from its original baseline plan. The slippage is the difference between the scheduled start or finish date for a task and the baseline start or finish date . Slippage can occur when a baseline plan is set and the actual dates subsequently entered for tasks are later than the baseline dates or the actual durations are longer than the baseline plan durations.
(Wideman Comparative Glossary of Common Project Management Terms v2.1 )
Other Definitions
Slippage – The amount of slack or float time used up by the current activity due to a delayed start. If an activity without float is delayed, the entire project will slip.
(Wideman Comparative Glossary of Common Project Management Terms v2.1 )
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