A delay may be caused by lack of resources, late approvals, design changes, procurement issues, productivity problems, or activities outside the team's control. Adding resources or overtime may not solve the underlying problem and can sometimes increase cost without recovering the schedule.
Before deciding on acceleration, we should understand the cause, impact, critical path, available options, and cost of recovery.
When a project is delayed, should the first priority be to understand the root cause and develop the right recovery strategy or should we accelerate immediately to protect the completion date?