Do I need to monitor exposure if we only do occasional rubber processing?

Yes — even if rubber processing is occasional, COSHH still applies. What matters is whether exposure to harmful substances like rubber fumes or dust could occur at levels that pose a risk.

That said, the level of monitoring you need may be lighter. A one-off exposure assessment may be sufficient to demonstrate that occasional activities don’t pose a significant risk — but this needs to be backed by evidence, such as air sampling results or a professional opinion.

It’s about showing that you’ve assessed the risk properly. If you're unsure, getting a competent hygienist to carry out a baseline survey can save you trouble later — especially if complaints or inspections arise.