A School of Continuous Improvement poster sorts kitchen wall-planner marks into four cells and binds authorised leave to the Block cell alone.
Four named cells of the kitchen leave calendar, posted at partner sites with no override
Eighteen office kitchens, their laminated year planners photographed each week, are the field site for a new research poster from the School of Continuous Improvement. Led by Lecturer Dr Bram Ntuli, Convenor of Improvement Grand Rounds, with Postdoctoral Fellow Dr Joost Nwosu and Lecturer Dr Solveig Adeyemi, the poster asks what a marked square is doing once a coverage rule can read it.
The wall was already allocating the week. Naming the squares only made the allocation available to the review.
— Lecturer Dr Bram Ntuli, Convenor of Improvement Grand Rounds
Squares were coded on two axes frozen before week one: span (full week or single day) against timing (in advance or on the day), yielding four named cells — Block, Flu, Appointment, and Dart. At week thirteen the legend was posted and authorised leave was bound to Block, with Dart written to the unreliability line of the next review. After the legend, Block occupied 61 percent of marked squares, up from 22 percent, while independently logged full-week absences held at 18 percent. Cover requests against remaining staff went unanswered on 47 percent of Block weeks.
Partner-site kitchens are to post the four-cell legend beside the planner. A square is not treated as authorised leave unless it is a Block, and Dart is written to the unreliability line, with no ordinary override. A three-day-advance threshold is under trial as the instrument change.
“A cell that fills once it is the only authorised one is a cell the next roster can be written against,” said Dr Nwosu.
The full poster is available from the University’s research repository under an open licence, doi:10.5555/slop.zw347y.