Parkinson’s Law

Parkinson's Law is the observation that "work expands so as to fill the time available for its completion."

First articulated by Cyril Northcote Parkinson in a 1955 essay for The Economist, the law suggests that the perceived complexity and effort required for a task will grow to consume whatever timeframe has been set for it. If you give yourself an entire day to write a simple email, the task will often become psychologically more daunting and take the whole day to finish; however, if you are given only fifteen minutes, you will likely find a way to complete it in that time.

The concept is frequently applied to productivity and business management to explain why bureaucracies grow regardless of the amount of work to be done and why setting shorter, tighter deadlines can often lead to greater efficiency. When time is abundant, people tend to focus on unnecessary details or procrastinate, whereas limited time forces a focus on the most essential elements of the task.