It is your employer’s duty to protect you from hazardous substances and hazardous situations whilst you are in work to minimise the risks of you developing an Industrial Illness or Industrial Disease.
For example, if your working environment is very noisy, it is your employer’s duty to reduce the noise to an acceptable level or, if this is not possible, to provide you with ear defenders to prevent Industrial Deafness or Noise Induced Hearing Loss. As long as your employer provides you with these ear defenders, it is your responsibility to wear them.
If your job brings you into contact with dangerous chemicals your employer should have already investigated the possibility of replacing the dangerous chemicals with less harmful ones and ensured that you have the minimal amount of contact with them as possible. If your employer has concluded that there is no way around you working with the dangerous chemicals, they should then provide you with protective clothing to wear. Again, it is your responsibility to wear the protective clothing once it has been provided.
Just a quote from a legendary art critique of our time for us to ponder for a bit:
"I know too that the powerful fear art, whatever its form, when it does this, and that amongst the people such art sometimes runs like a rumour and a legend because it makes sense of what life’s brutalities cannot, a sense that unites us, for it is inseparable from a justice at last. Art, when it functions like this, becomes a meeting-place of the invisible, the irreducible, the enduring, guts and honour." John Berger