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Flexible 5-Shift System: The Sustainable Response to Personnel Shortages
Understanding and designing working time systems – Expert article by Dr. Andreas Hoff
Why are 24/7 shift systems increasingly difficult to staff?
Round-the-clock operations rely on constant staff availability. Yet, these working models are rapidly losing their appeal. Regular night shifts, frequent weekend duties, and unpredictable leisure time are driving employees away.
Dr. Andreas Hoff highlights this issue in his article "A flexible 5-shift system against personnel shortages" (HR Performance 3/2024). This staffing crisis impacts every sector requiring 24/7 coverage, from manufacturing and energy supply to transport and healthcare.
His core argument: only flexible shift systems can secure the long-term viability and appeal of shift work.
Why does rigid shift scheduling lead to chronic personnel shortages?
Many facilities rely on fixed 4- or 6-shift systems. In practice, these rigid models cause persistent understaffing. Dr. Hoff observes a destructive pattern in his consulting work: when employees are absent, others are forced into overtime. This spikes stress levels, drives up sickness rates, and increases turnover—creating a cycle that is incredibly hard to break.
Sudden staff shortages are especially devastating in specialised fields where onboarding new employees takes months or even years.
What distinguishes the flexible 5-shift system?
Dr. Hoff argues that the 5-shift system perfectly balances predictability, stress reduction, and operational stability. Key features include:
- An average scheduled working time of approximately 33.6 hours per week.
- Employees get an average of two out of five weekends off.
- Working hours can be individually reduced and customised.
- Absences are easily covered using dedicated "floater" (relief) capacities.
This structure gives employees greater control over their schedules while providing companies with crucial operational breathing room. Both are essential for making shift work attractive again.
Why is flexibility essential from a business perspective?
Rigid scheduling inevitably creates inefficient and costly cycles of overstaffing and understaffing. Flexible systems using working time accounts eliminate these overcapacities while honoring individual employee preferences. Staff become active participants in designing their work lives, rather than just numbers on a spreadsheet.
Why the 5-shift system is the best model for 24/7 operations
"Shorter working hours are the tool of choice here, because the comparatively poor quality of working time in shift operations cannot be changed."— Dr. Andreas Hoff, HR Performance 3/2024
The flexible 5-shift system enables exactly that: more recovery time in the form of additional days off, without having to force collective reductions in working hours. It allows for individually different working hours, considers personal needs, and creates organisational stability at the same time.
In this way, shift operations become competitive again—even against increasingly flexible day-shift roles offering home office, flextime, and 4-day weeks.
What is the difference between a 4-shift system and a 5-shift system?
A 4-shift system covers 24-hour operations using four teams, which often results in longer weekly working hours for individual employees. In comparison, a 5-shift system integrates a fifth team, offering workers more leisure time, better recovery, and lighter workloads.
How does a 24/7 shift model work?
A 24/7 shift model ensures seamless, around-the-clock operations by systematically rotating multiple teams through early, late, and night shifts. To maintain stable workforce readiness, the system carefully alternates active working phases with legally mandated rest periods.
What must I consider regarding night shifts?
To ensure a fair balance during night shifts, employers must account for legal rest periods and provide appropriate financial surcharges or compensatory time off. On an individual level, practicing structured sleep hygiene and maintaining an adapted diet can help employees smoothly adjust their biological rhythms to night shift hours.
