We recently set a new record for the time to fill an annual on-call roster: fifteen minutes. Let me write that again: 365 shifts across a 12-month roter allocated across over 200 doctors in less than 15 minutes. See ‘Hospital B’ on the chart here.Actually, we thought we’d set a record only a few hours earlier, with another hospital, filling 80% of their shifts in 20 minutes (‘Hospital A’).These hospitals demonstrated some lessons in common that can apply to all hospitals: