Rule 61. The following instructions to employees and others shall be retained for the periods listed:
(a) Bulletins or memoranda of general instructions issued by the company to employees which pertain to changes in accounting, engineering, operating, maintenance, and construction policies. | 10 years after expiration or supersession. |
(b) Bulletins or memoranda of general instructions issued by the company to employees which pertain to accounting, engineering, operating, maintenance, and construction methods and procedures. | Destroy at option after expiration or supersession. |
(c) Notices to employees on matters of discipline, department, and other similar subjects. | Destroy at option. |
Mich. Admin. Code R. 460.2561