If you run a plant, a control room, or any operation that never turns the lights off, sooner or later someone hands you a grid of letters and asks you to make sense of it. The DuPont schedule is one of the oldest and most recognizable of those grids: a 4-crew, 12-hour-shift rotation that covers a facility 24 hours a day, 7 days a week, and famously gives every worker one full stretch of seven days off in each four-week cycle. It came out of the DuPont chemical company decades ago, and it is still in heavy use in manufacturing, refining, utilities, and emergency services today. It’s one of several rotating shift schedule patterns worth knowing before you pick one for your team.
This post explains what a DuPont schedule actually is, walks through a concrete DuPont schedule example week by week, covers the “modified DuPont schedule” variants people ask about, and touches on the health question that shows up in every search for this topic. At the end I will point you at a free tool where you can build one yourself.
