Related Experiment Video
Updated: Jun 19, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
Published on: August 8, 2019
Making time off predictable--and required
Leslie A Perlow1, Jessica L Porter
1Harvard Business School, Boston, USA. lperlow@hbs.edu
Abstract:
People in professional services believe a 24/7 work ethic is essential for getting ahead--and so they work 60-plus hours a week and stay tethered to their Black-Berrys. This perpetuates a vicious cycle: Responsiveness breeds the need for more responsiveness. When people are always "on," responsiveness becomes ingrained in the way they work, expected by clients and partners, and even institutionalized in performance metrics. There is no impetus to question whether the work actually requires 24/7 responsiveness; on the contrary, people work harder and longer, without stopping to explore how they could work better. But four years of research conducted by the authors in several North American offices of the Boston Consulting Group suggests that consultants and other professionals can provide the highest standards of service and still have planned, uninterrupted time off. They can do this even in times of recession. In this article, Perlow and Porter outline the lessons from BCG's implementation of predictable time off--namely, impose a strict mechanism for taking days and nights off, encourage lots of talk about what's working and what isn't, promote experimentation with different ways of working, and insist on top-level support.
Related Concept Videos
Methods of Documentation II: POMR
Setting Time of Cement
Reinforcement Schedules
Once a behavior is learned,...
Biological Clocks and Seasonal Responses
Timing and Consequences on Behavior
Humans, however, can respond to delayed reinforcers. We often make decisions between immediate small rewards and delayed larger rewards. This ability to delay gratification is a significant factor...
Social Traps
