The purpose of this article is to find out the logical contradictions for occupational hazards compensation. Occupational hazards relief in the literature review can be divided into "compensation" and "Damages". On observing the existing Occupational hazards Compensation system, it can be found that the "medical evidence & legal principle", implied the logic of "Damages", which caused insurance relief in "Compensation logic principle" toward to "evidence for principles", but it is hard to proof in practice. While emerged the contradiction on "Insurance premium adjustment" of fiscal system, unfair burden and improper allocation under label effect, and roleplayer chaos etc. the issue of administration and institution as well. As a result, driving the employer escaped the responsibility of the occupational hazards which leads laborers excessive bears the cost of Occupational hazards.