(Zraunig v New York Telephone Company, 32 A.D2d 686 [3rd Dept 1969]). The Court has found prejudice when the delay aggravates the injury or prevents the employer from properly investigating the claim. (Yagaloff v Lincoln Hall, 137 AD2d 955 [3rd Dept 1988]; Pierce v New York Telephone Company, 99 A.D.2d 898  