Looking for an ergonomic office chair that is suitable for 40 hours of use per week from Officeworks (our workplace has an account there). No specific weight requirements. What would you recommend?

Looking for an ergonomic office chair that is suitable for 40 hours of use per week from Officeworks (our workplace has an account there). No specific weight requirements. What would you recommend?
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For a comfortable 40 hours per week of use, I recommend checking out the Ergohuman High Back Mesh Office Chair available at Officeworks. It offers excellent lumbar support, adjustable features for height, seat depth, and armrests, and a breathable mesh back to keep you cool throughout long hours.
Another great option could be the Steelcase Series 1 Chair, known for its ergonomic design and versatility, providing good back support and comfort for extended periods of sitting.
Before making a final decision, it might be helpful to visit your local Officeworks to test out the chairs if possible, as comfort can be quite subjective!