Section R. 28.14957 - Heart attack or strokeRule 7
(1) If a public safety officer dies as the direct and proximate result of a heart attack or stroke, the officer shall be presumed to have died as the direct and proximate result of a personal injury sustained in the line of duty, if the following apply:(a) The officer, while on duty, did either of the following:(i) Engaged in a situation involving nonroutine stressful or strenuous physical law enforcement, fire suppression, rescue, hazardous material response, emergency medical services, prison security, disaster relief, or other emergency response activity.(ii) Participated in a training exercise that involved nonroutine stressful or strenuous physical activity.(b) The officer died as a result of a heart attack or stroke suffered in 1 of the following time frames related to an activity described in subrule (1)(a) of this rule: (i) While engaging or participating in the activity.(ii) While still on duty after engaging or participating in the activity.(iii) Not more than 24 hours after engaging or participating in the activity.(2) For purposes of this rule, nonroutine stressful or strenuous physical activity excludes actions of a clerical, administrative, or nonmanual nature.(3) The presumption in subrule (1) of this rule shall be overcome by competent medical evidence to the contrary.Mich. Admin. Code R. 28.14957