This paper examines the time-varying conditional correlations among Crude oil. EUR/USD and major ETS markets. We apply a trivariate dynamic conditional correlation (cDCC) GARCH models in order to capture potential contagion effects between the markets for the period 2013-2017. Empirical results reveal contagion during the under investigation period regarding the trivariate models, showing potential volatility transmission channels among the markets. Findings have crucial implications for policymakers who provide regulations for the above derivative markets.