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Glossary

Schedule Slippage

Schedule Slippage refers to delays in completing project tasks beyond their planned deadlines, leading to project overruns. This can result from factors like poor planning, resource shortages, or unforeseen challenges, causing a domino effect that pushes back subsequent tasks and extends the overall project scheduling.

Topic: 
Project Scheduling
Date posted: 
November 13, 2024
Date updated: 
June 23, 2025

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What is Schedule Slippage?

Schedule Slippage refers to delays in completing project tasks beyond their planned deadlines, leading to project overruns. This can result from factors like poor planning, resource shortages, or unforeseen challenges, causing a domino effect that pushes back subsequent tasks and extends the overall project scheduling.

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Use this FREE Construction Schedule Template to plan and outline all phases, milestones, and tasks. Keep your construction project organized and on track from start to finish.

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What are common causes of schedule slippage in project management?

Schedule slippage is a common challenge in project management, often resulting from insufficient planning, unrealistic project timelines, resource constraints, or unforeseen obstacles. For example, failing to incorporate activity sequencing and adequately account for potential risks in the project schedule can lead to delays.

Additionally, scope creep (when project requirements expand without control) significantly contributes to schedule slippage. Poor resource allocation and misjudging float time or critical path dependencies also increase the likelihood of delays.

How can project managers prevent schedule slippage?

To prevent schedule slippage, project managers should engage in thorough planning, set realistic timelines, and allocate resources effectively. Regular progress monitoring and clear communication among team members are crucial. Implementing risk management strategies to anticipate and mitigate potential delays can also help keep the project on track.

What tools can help monitor and manage schedule slippage?

Project management software like Mastt offers advanced project management tools designed to help monitor and manage schedule slippage effectively. With Mastt, project managers can track task progress against baselines, spot delays early, and adjust plans to stay on target.

Mastt’s intuitive dashboards and real-time reporting provide clear insights into schedule performance, enabling proactive management of potential slippage.

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