Slack is the difference between the scheduled completion date of a task and its required date, where the required date is later than the completion date. When there is slack in a task, a project manager can choose to delay the start of the task, allocate fewer resources to the task, or conduct the task in the usual manner and preserve the slack in case there are delaying problems later in the project. There is no slack in the critical path of a project.

Related Courses

Project Accounting 
Project Management