We tried a 4-day workweek for 6 months. Here's what we had to do to make it work and why we landed on something different.

• Jo Burns-Russell's agency joined one of the largest four-day-workweek trials for six months.
• During the pilot, it went from 40 hours a week over five days to 32 over four days.
• Burns-Russell shared how it worked — and why the agency opted for a 35-hour flexible week.

This as-told-to essay is based on a conversation with Jo Burns-Russell, the 41-year-old founder of the creative agency Amplitude, from Northampton, England. It has been edited for length and clarity.