This is an attempt to explain the UK benefits agency compensation scheme for occupational asthma. I am nothing to do with this scheme, but have seen others have problems. The scheme in my opinion is not directed at the main problem, which is to facilitate early removal from exposure, and facilitate retraining where necessary. There is no particular reason why the common purse should pay money to those with asthma from work, rather than those getting asthma for other reasons; common law claims are for this.
To claim you need to identify the cause (in the balance of probabilities, i.e. more likely than not). Several agents that you mention are on the list, including wood dusts, latex, colophony and isocyanates. The claim goes to an adjudication officer, whose job is to confirm that you are employed where you say you are, and are exposed to the agent that you have identified as the cause. For this your employer is written to to confirm both facts. Fairly often the employer states that you are not exposed to the agents identified (often through lack of knowledge from the person replying). Your claim then fails before you have seen anybody medical. An appeal is then against the facts of employment and exposure, for which you will usually have to provide evidence.
Once past the adjudication officer, you will be seen by a doctor who has to decide on the evidence available whether you have asthma, whether it is caused by the agent you have identified, and how disabled you are. If you are judged to have occupational asthma and are thought to be less than 14% disabled, you receive no money.
The diagnosis is rarely helped by examining the chest, measures of lung function assist in defining disability rather than the cause. The diagnosis can by suggested from the history of relationship between symptoms and specific agents at work, and substantially strengthened by measurements made while you were at work, particularly serial measurements of peak expiratory flow (the main focus of this website). Finding specific IgE (allergic) antibodies to some agents, such as latex, would strengthen the case; they are however unreliable or unavailable for most woods, colophony and isocyanates.
Compensation in other countries combines common law and statutory schemes into one, and the best require the insurance companies to pay for expert investigation, usually with exposure challenge tests. This is not the situation in the UK.
Not all asthma coming on in adults is due to work exposures, there are many other possibilities including drugs (particularly beta blockers and pain killers), new domestic exposures, severe infections or unusual exposures such as fires, and some people get asthma for no identifiable reason.
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