What is work related asthma? Work related asthma accounts for about 10% of all adult onset asthma. Asthma related to the workplace can be categorised into 2 distinct subsets: Work aggravated asthma Occupational asthma Work Aggravated Asthma Persons with work aggravated asthma usually have a history of pre-existing asthma. Occupational Asthma Occupational asthma is caused...