Requirements for Employment
Rule 44. No person defective in hearing, sight or color perception shall be employed in any branch of the service involving the use of signals or the movement of trains and engines. All persons thus employed will be required to pass examination by one of the authorized specialists or examiners as to hearing, sight, and ability to distinguish colors. Reexamination will be required as follows:
a. Once in every four years.
b. After acute affection of the eyes or eyelids, or of the ears.
c. After any protracted or serious illness, on the recommendation of a Beneficial Association Surgeon.
d. When deemed necessary by the Superintendent.
Northern Pacific Railway Company, Rules and Regulations Operating Department, Effective June 1, 1899.