Fundamental Distinction Between “Medically Distinguishable” Injuries Under Section 301(1) and “Significant Manner Contribution” Test Under MCL 418.301(2) Under Workers Disability Compensation Act Yet to Be Clarified by Courts

There is a confusion among the Workers' Compensation Board of Magistrates and, in some cases, in the Michigan Compensation Appellate Commission (the Commission) between the proper prima facie injury analysis required of a plaintiff under MCL 418.301 when dealing with the range of types of “preexisting conditions”. Part of this confusion is semantics, i.e., many [...]