Asthma and over breathing

For people with asthma in particular there can be occupational triggers for their breathing problems:

Those working in dusty environments such as construction workers, joiners, plumbers or bakers.
Workers who are exposed to fumes or pollution such as car mechanics, paint sprayers or machine operators.
Workers who use breathing apparatus such as divers or fire fighters.
People who use their voice as part of their job such as call centre workers, teachers, actors, those who give lectures and presentations or musicians who play wind instruments.
People who work outdoors in adverse weather conditions.