This study attempts to find out the influence of trade liberalisation on wage inequality in Indonesia. A two-stage estimation approach is used. Using the national labour force survey dataset, the study estimates industry wage premium and industryspecific skill premium in the first stage conditional on individual worker characteristics. In the second stage, the study regresses industry wage premium and industry-specific skill premium on tariff as a measure of trade liberalisation, respectively. It is concluded that trade liberalisation significantly contributes to increasing wage inequality. This contribution occurred through changes in industry wage premium but not industryspecific skill premium.

Using Logistic Regression and Hedonic Price Model, this study aims to find the social-economic factors infuencing the demand and willingness to pay (WTP) for clean water supply and proper sanitation. This study find that education and age of household head are the affecting factors. Also, it found that per capita expenditure aects the availibilty of access for sanitation and clean water for all household group. WTP for clean water and sanitation in urban is greater than in rural. In additions, WTP of non poor households are greater than poor household, except for urban area.

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