Ergonomic Citizenship Behaviour (ECB) is an employee extra role behaviour towards ergonomics. ECB is a new construct which is generally adapted from well-established studies relating to Organizational Citizenship Behaviour (OCB) and more recently of Safety Citizenship Behaviour (SCB). The purpose of this study is to examine the relationship between specific Organizational Climate dimensions namely as Autonomy, Involvement, Supervisory Support and Welfare with ECB. Data were obtained from 448 employees who work in OSHMS certified manufacturing located in northern region of peninsular Malaysia using self-administered questionnaire. Data were analysed using Partial Least Square (Smart PLS) version 2.0. Based on the statistical analyses conducted, the findings revealed that the specific Organizational Climate Dimensions namely Autonomy, Involvement, Supervisory Support and Welfare has significant relationship with ECB. This relationship was explained from the perspective of Social Exchange Theory. This study offers empirical evidence of the new proposed construct of ECB, which very useful for prevention of employee un-ergonomics behaviour at the workplace.