Turkish social security system of occupational accidents and diseases effects: Yalova example

?Occupational Accidents? and ?Occupational Diseases? are the leading factors which cause the emergence of assurance conception that constitutes the base of Social Security Systems. Being classified within occupational risk grup as one of oldest branches of Social Security , ?Occupational Accidents? and ?Occupational Diseases? generate risk not only for insuree , also in terms of actuarial balance of Social Security Systems.This study aims to be able to figure out the place of Social Security in actuarial balance by examining the effects of harms stemmed from ?Occupational Accidents? and ?Occupational Diseases on Social Security Systems as Yalova case.In compliance with this aim , study has been prepared in 3 parts for first part of the study , Social Security Concept and Social Security income-expense groups are explained,in the second part , with broad viewpoint of Occupational Accidents and Occupational Diseases, Occupational Accidents and Occupational Diseases in Turkey are analyzed, in the third part , aids provided from Occupational Accidents and Occupational Diseases insurance are elucidated, in the fourth part , specific to Yalova , general features of Occupational Accidents and Occupational Diseases and their effects are presented as an analysis study.