Section R. 408.15117a - Work areasRule 5117a.
(1) Employees shall be spaced, and the duties of each employee shall be organized, so that the actions of one employee will not create a hazard for any other employee.(2) Work areas shall be assigned so that trees cannot fall into an adjacent occupied work area. The distance between adjacent occupied work areas shall be not less than 2 tree lengths of the trees being felled. The distance between adjacent occupied work areas shall reflect the degree of slope, the density of the growth, the height of the trees, the soil structure, and other hazards reasonably anticipated at the worksite. A distance of more than 2 tree lengths shall be maintained between adjacent occupied work areas on any slope where the rolling or sliding of trees or logs is reasonably foreseeable.(3) Each employee shall work in a position or location that is within visual or audible contact of another employee.Mich. Admin. Code R. 408.15117a