(1) Each employer shall:

(a) faithfully maintain in each establishment a log and summary of all recordable occupational injuries and illnesses for that establishment; and

(b) except as provided in (2) , enter each recordable injury and illness on the log and summary as early as practical but no later than six working days after receiving information that a recordable injury or illness has occurred. For this purpose a form equivalent to the OSHA No. 300, furnished by the Department of Labor and Industry, or a readable and comprehensible equivalent shall be used. The log and summary must be completed in the detail provided in the form.

(2) In addition to the reporting requirements of (1) (b) , an employer must report to the department's occupational safety and health bureau, either by telephone, (406) 444-6401, or by fax, (406) 444-9396, any of the following events within 24 hours of the event's occurrence:

(a) the death or heart attack of any employee from a work-related incident; or

(b) the hospitalization of three or more employees as a result of a work-related incident.

(3) If the employer is not immediately aware of an incident described in (2) , the employer must report the incident within 24 hours of becoming aware of such an incident. The reporting requirement of (2) does not apply to a fatality, heart attack or multiple hospitalization if it occurs on or is the result of travel on a commercial airplane, train or bus.

(4) Records shall be established on a calendar year basis.

(5) The summary log of the previous calendar year shall be posted from February 1 through April 30 of the subsequent calendar year. The summary log shall consist of annual totals of the data required on the log together with the raw data.

(6) Records provided for in this part shall be retained for a minimum of five years or as long as is deemed necessary by the Department of Labor and Industry to track potential occupational illnesses peculiar to the work undertaken at that facility.

(7) Records provided for in this part maintained and retained by an employer shall be made available promptly upon request to representatives of the safety bureau, or to workers subject to that employer, or their appointed representatives. "Made available" means presenting to the authorized person to be physically reviewed or copied as necessary.