It's not about being cold, the workers that are working in coal are not at fault. Imagine you being a mid thirties guy in Indonesia, when you were in early twenties looking for a career in a couple try with sever lack of jobs that pay high enough to sustain a life that allows you to own a house and a car near some urban area, when world is still warming up to the idea of Global warming, you will take the coal mining job because it pays well, allows your kids to study in English medium schools. Allows you to save to send them to university. They are only trying to get what a lot of people in developed have taken it for granted. And it's a legitimate problem on how to re-employ people from early retirement of coal plants.