Mesothelioma Bill [HL]

I am sorry to interrupt my noble friend, but was it always clear whether a person was covered by the employer’s liability insurance? In the industries which have been mentioned, such as the construction industry, where the boundaries between the employed and the self-employed were not always clear, and a person comes forward and claims that he worked for such and such a firm and was employed at the time, but the employer’s liability insurance has been lost, how can the scheme be satisfied that he was qualified within the terms of the Bill?