A finding that crosses borders
Across Europe, the data is unanimous: Monday is the day on which the greatest number of workplace accidents occur. This is not a coincidence — it is a signal that companies must take seriously.
The figures country by country
- In FranceMonday and Thursday alone account for 48% of accidents resulting in sick leave according to the CGT (2024).
- In Germany, 20.3% of reported accidents occur on Monday, with a peak at 10am (DGUV)
- In Spain, Monday accounts for 22.3% of accidents in the Madrid region, with a progressive and consistent decrease through to Friday
- In Italy, Portugal, Belgium, Switzerland and the United Kingdom, the relevant authorities — INAIL, ACT, Fedris, SUVA and HSE respectively — all confirm the same trend: Monday is the most accident-prone day of the week.
Why is Monday so risky?
Returning after the weekend disrupts automatic behaviours. The body and mind are not yet in “work mode”. New tasks and projects often start at the beginning of the week, multiplying unfamiliar situations. Communication between teams is less fluid after two days away.
And what about Friday?
Friday is generally the least accident-prone day of the week. The week is better planned, the rhythm is familiar, teams are in their stride. However, one important nuance: commuting accidents are more frequent on Friday evenings, due to accumulated fatigue and heavier traffic. Vigilance therefore remains essential, especially on the road.
What this means for your company
Knowing the high-risk days means being able to act in advance. Strengthen Monday morning briefings. Systematise Pre-Job Check forms at the start of the week. Adapt the scheduling of the most hazardous tasks. These are simple, concrete and immediately applicable actions.
Conclusion
Monday is the most accident-prone day in all the countries studied. Friday is generally the least risky — but requires increased vigilance for commuting accidents. Two simple, documented findings that deserve to be known by everyone who works in the field.