The 12x36 shift — 12 hours worked followed by 36 hours off — is extremely common among healthcare, security and other professionals in roles that require continuous coverage. Since the 2017 labor reform, this arrangement has had explicit legal backing, but that doesn't mean any 12x36 setup is automatically valid.

What the law requires for a 12x36 shift to be valid

  • Formal agreement: the 12x36 shift needs to be set out in a written individual agreement or in a collective bargaining agreement — it can't just be an informal company practice.
  • Compensation already built in: the monthly pay for this arrangement already compensates for weekly rest days and holidays worked, as provided by law — it doesn't entitle the employee to double pay for a holiday, as long as the agreement states this explicitly.
  • Meal and rest break: even in 12-hour shifts, the break for rest and meals must be respected, unless a collective agreement for the category states otherwise.

What the law does NOT allow in this arrangement

  • Stringing shifts together without respecting the minimum rest period between one workday and the next.
  • Adding overtime on top of a 12x36 shift without proper payment or compensation — the arrangement is already a differentiated schedule, but that doesn't eliminate the right to overtime if the shift goes beyond the 12 hours agreed.
  • Applying the schedule without the formal agreement mentioned above — in that case, the Labor Court can invalidate the arrangement and order payment of hours worked beyond 8 per day as overtime, even if the company has operated this way for years.
💡 Sectors like nursing and private security often have specific rules in their category's collective agreement — it's always worth checking what your sector's agreement provides for beyond the general CLT rule.

Practical care when building the schedule

Beyond legal compliance, a few operational precautions avoid friction with the team:

  • Distribute night and weekend shifts on a rotating basis across the team.
  • Make sure the 36-hour gap between shifts is genuinely free time — no call-ins or unpaid on-call duty within that period.
  • Document any shift swap between employees, with formal approval from whoever is responsible for the schedule.

Why it's worth documenting everything digitally

In the event of an inspection or labor dispute, having a complete history of schedules, swaps and hours actually worked — recorded digitally, with date and time — is the best defense a company can have. Loose spreadsheets or shifts arranged over text message are fragile in this scenario; a schedule-management system with an automatic audit trail handles this without extra manual effort.