Task Idle Time means a non-productive period in the duration of a task due to cause-specific stoppage or delay in the task’s execution. This non-productive period is often planned and scheduled beforehand, so it causes an expected extension to the task’s overall duration at the task planning stage. Very rarely idle time is not considered in advance.
Task idle time has rather a protective context to avoid an unplanned and undesired extension of task duration. If idle time happens due to some reasons (e.g. technical failure, lack of finance, maintenance, resource non-availability), employees have to stop their job and do not perform their tasks until the problems are solved.
But idle time does not mean delaying in work. Although employees stop doing their tasks during the non-productive period, they do not stop their activity at all. They usually discuss and communicate with senior management about task outcomes and also possible issues that may arise as the period finishes. The key idea of employee communications is to ensure task success through feedback and discussion during idle time periods.