§ 45. Notice to employers. The employer to whom notice of death or
disability is to be given, or against whom claim is to be made by the
employee, shall be the employer who last employed the employee in the
employment to the nature of which the disease was due and such notice
and claim shall be deemed seasonable as against prior employers. The
requirements as to notice as to occupational disease and death resulting
therefrom shall be the same as required in section eighteen of this
chapter, except that the notice shall be given to the employer within
two years after the disablement or after the claimant knew or should
have known that the disease is due to the nature of the employment,
whichever is the later date.