Ergonomic Office Chair: European Standards (BS EN1335)

Why are the standards produced?

Ergonomic office chair product standards have been developed to ensure maximum chair quality and safety.

What are the Ergonomic office chair standards?

There are 3 main parts to the new ergonomic office chair standards

  • Part 1 focuses on the dimensions of office chairs
  • Part 2 focuses on the safety requirements of office chairs
  • Part 3 focuses on the safety test methods of office chairs

Part 1 of BS EN 1335 includes information on the dimensions of 3 types of ergonomic office chair

Type A office chair (ergonomic chair with a full range of adjustments)

Seat height must be adjustable (400mm minimum height and 120mm adjustment range).

Type B office chair (standard office chair with basic ergonomic features)

Seat height must be adjustable (minimum height 420mm and 100mm adjustment range).

Type C office chair (executive chair with thicker upholstery)

Seat height must be adjustable (400mm minimum height and 80mm adjustment range).

To see our range of ergonomic office chairs please visit