Causation: Administrative-law style

I open with a warning: I find the Supreme Court of Canada's causation jurisprudence hard to fathom, so it is with some trepidation that I venture out to comment on Alberta (Workers' Compensation Board) v Alberta (Appeals Commission for Alberta Workers' Compensation), 2012 ABQB 733. The case is about an individual who contracted asbestos-related disease through his employment and who subsequently died of metatastic renal cell carcinoma.