WCL § 45 states that the § 18 notice period is extended to two years after the claimant becomes disable, or after the claimant knew or should have known the disease was due to the nature of the employment, whichever is later. Please note, this time constraint is the same to comply with § 28 in the context of making a claim to the Board for occupational diseases. All of that salt swingin’ protected this employee for an additional 23 months, not bad.