The reasonable person rule is the standard used by the courts to set the statute of limitation clock into motion. According to this rule, the clock starts the moment a reasonable person would be expected to suspect a cause effect relationship between exposure and symptoms. That said, under current law if you have been exposed to chemicals at work you have a duty to ascertain the nature of the exposure, collect all pertinent records and duly file a claim even if you are asymptomatic in an effort to preserve your rights to compensation at a later date. But if everyone did this under the current law it would undoubtedly lead to thousands of frivolous and unnecessary claims being filed with the courts to pressure patients rights. Clearly this story raises a reasonable concern that legislatures may need to address.
Link to full story in at Slate.com