In my previous life at a large backbone provider's managed security services SOC/NOC we had the following: Shifts where divided into front and back half with 10 hour days. Front and back half segments of the shift where also split with half working Sun-Wed and half working Mon-Thur alternating. That had them alternating weekend coverage but also alternating 4 day and 2 day 'weekends'. One shift lead did M-F 8 hour days and was primary escalation for their reports during off hours/weekends, with the lead having to fill any emergency schedule holes. This provided shift overlap to cover issue hand offs and had everyone in the office Tue-Thur to cover meetings, training, any large projects, etc. At min the shifts where 9 staff (4 front half, 4 back half, and the team lead). So 27 min staffing. We normally had some additional folks per shift and they would do M-F 8 hours like the lead or fill a gap on weekends and flex the overages during the week during the mid week overlap. We did do the 30 day rotation of changing to the next shift (ie Morning -> Days -> Midnight -> Morning) but once we got beyond staffing with 20 year old single guys it was basically impossible to keep someone very long who was willing to do that as it kills any outside activities like taking classes, kids schedules, etc.) -- --- James M Keller