In 2000 HSE estimated that between 1500 and 3000 people develop occupational asthma, rising to 7000 cases a year if you include asthma made worse by work (work-related asthma).
Statistics released by HSE in 2008 indicate that the number of cases has fallen in recent years but occupational asthma is still a major concern.
The cost to society is estimated to be up to £1.1 billion over 10 years.
Asthma can ruin lives. Some sufferers become so disabled they cannot work again.