Shift Patterns for Security and Emergency Services
Security, police, fire, and ambulance services all share a common requirement: continuous 24/7 staffing with legally compliant rest periods. The shift patterns used in these sectors have evolved to balance operational coverage with worker welfare, and they vary significantly by employer, region, and the specific role.
SIA-licensed security officers most commonly work 4-on-4-off 12-hour shifts, rotating between day and night. This pattern is simple, predictable, and gives security workers a consistent 4-day block of rest between working periods. Larger sites — including airports, hospitals, and commercial complexes — often run dedicated day-only or night-only security teams on the same underlying 4-on-4-off structure.
Police forces in the UK vary significantly by region in their choice of rota. Many forces use a modified EOWEO (Every Other Weekend Off) schedule, also known as the Kelly pattern. This 5-team, 10-day cycle provides 10-hour day shifts and ensures every officer has a full weekend off every other fortnight. Some forces use custom 10-week or 8-week rotas developed through federation negotiations. If your force uses a non-standard pattern, use the custom builder in the selector above.
Fire service workers in England typically use either a 2-2-4 pattern (2 days, 2 nights, 4 off) or the EOWEO/Kelly schedule. The 2-2-4 pattern involves 24-hour retained duty days and 15-hour retained night duties, rather than 12-hour shifts, giving fire service workers longer rest periods. Some retained fire stations use on-call arrangements rather than fixed shift patterns — this calculator does not model on-call rotas.
For all of these roles, bank holidays are particularly significant. The calendar highlights all UK bank holidays automatically, allowing you to see at a glance which ones fall on your working days. For police officers, working a bank holiday typically results in a rest day in lieu rather than enhanced pay, though local agreements vary.
Frequently Asked Questions
What shift pattern do security guards work?
SIA-licensed security officers most commonly work 4-on-4-off 12-hour shifts, rotating between days and nights. Some static guarding contracts use 12-hour days only or fixed nights. Larger sites and control room operations may use the EOWEO/Kelly schedule or a custom 10-week rota agreed between employer and client.
What is the EOWEO / Kelly schedule used in emergency services?
EOWEO stands for Every Other Weekend Off. The Kelly schedule uses 5 teams working 10-hour day shifts across a 10-day cycle. The pattern gives every other weekend off and is commonly used in police, fire, and ambulance services. It averages 40 hours per week and ensures no single officer is expected to work more than 4 consecutive days before a rest day.
How does a 4-on-4-off shift work for security?
On a 4-on-4-off security rota you work 4 consecutive 12-hour shifts followed by 4 days off. The pattern then repeats, with the shift type (days or nights) rotating between cycles. Over an 8-day cycle, two of the four teams are on days while two are on nights. The pattern averages approximately 42 hours per week.
Do police officers get bank holiday pay?
Police officers in England and Wales are entitled to bank holiday provisions under Police Regulations 2003. Officers who work on a bank holiday receive an extra day off in lieu (known as a rest day in lieu). The specific rules depend on your force's local agreements. This calculator highlights all UK bank holidays on your calendar so you can see which ones coincide with your working days.
How many weekends off do you get on a 4-on-4-off pattern?
On a 4-on-4-off pattern the number of weekends off varies — because the 8-day cycle doesn't align neatly with the 7-day week, your days off gradually rotate through all days of the week over time. On average, you will have a full weekend off roughly every 3 weeks. The calendar above shows exactly which Saturdays and Sundays you have off for the next 12 months.