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EN 1335 and NPR 1813

Everything you need to know about ergonomic office chairs

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An ergonomic office chair forms the basis of a healthy workplace. Are you looking for a new office chair and do you come across terms like EN 1335, NEN EN 1335 or NPR 1813? On this page we explain what these standards mean, what the differences are and how to choose the right office chair for your body, your working posture and your daily use. This way you make a well-thought-out choice for a comfortable and long-lasting workplace.

Why are EN 1335 and NPR 1813 important?

A good office chair does much more than just make you sit comfortably. When a chair is well tailored to your body, it helps prevent back, neck and shoulder problems, increases seating comfort and supports a healthy working posture. EN 1335 and NPR 1813 are therefore important guidelines for ergonomic office chairs. They place demands on safety, durability, dimensions and adjustment options.

What is EN 1335?

EN 1335 is the European standard for office chairs. The standard describes which requirements an office chair must meet in the areas of safety, stability, longevity, ergonomics and dimensions. A chair that complies with EN 1335 is extensively tested and suitable for professional daily use.

Important components of the standard:

  • Stability
  • Resilience
  • Security
  • Longevity
  • Adjustment options
  • Construction quality

What is NPR 1813?

NPR 1813 is a Dutch practice guideline that builds on EN 1335. The directive was developed because Dutch people are, on average, taller than many other Europeans. That's why the NPR 1813 places higher demands on the adjustment range, including the seat height, seat depth, armrests and backrest. This makes an office chair suitable for a larger group of users.

EN 1335 versus NPR 1813

EN 1335 NPR 1813
European standard Dutch Practice Guideline
Suitable for the average user Larger adjustment range
Focus on safety and quality Additional ergonomic requirements
Widely used in Europe Much used in the Netherlands

When do you choose EN 1335?

EN 1335 is an excellent choice for most users and organizations. If you work in a standard office workstation or share a flex workstation with colleagues, then an EN 1335 certified office chair will usually provide all the ergonomic support you need.

When do you dial NPR 1813?

If you are taller or shorter, work at home a lot or sit in front of a screen for a long time every day, then NPR 1813 often offers extra comfort. Thanks to the more extensive adjustment options, the chair can be better tailored to your body.

Advantages of a certified office chair

  • Healthier working posture
  • Lower chance of physical discomfort
  • More comfort during long working days
  • Tested safety and durability
  • Longer lifespan
  • Responsible investment

Frequently asked questions

Is NPR 1813 mandatory?

No. NPR 1813 is a practice guideline and not a legal requirement.

Is EN 1335 sufficient?

For most users, yes. If you have specific ergonomic needs, NPR 1813 may be a better choice.

Which standard is better?

That depends on the user. NPR 1813 offers a larger adjustment range, while EN 1335 is excellent for many situations.

Which office chair is suitable for tall people?

An NPR 1813 certified chair is often the best choice thanks to the extensive adjustment options.

Why choose bueroshl24?

At buerostuhl24 you will find a large range of certified office chairs that comply with EN 1335 and/or NPR 1813. Our specialists will be happy to advise you on the right chair for your workplace. In our showroom you can try out and compare different models so you can be sure you are making the right choice.