(1) Employers’ records of injuries. An employer shall keep a record of each injury and occupational disease fatal or otherwise, arising out of and in the course of employment, reported to the employer or of which he otherwise may have knowledge. Such record shall include a description of the injury or disease and the manner in which the same occurred, a statement of the time during which an employee was unable to work because of the affliction and such other information as the commission may require to be kept.