How much should you pay for work done? If you live in a house or apartment where there is working staff provided, you possibly do not have to pay them 'officially', but you may want to tip them for small works performed (such as plumbing for your toilet, an amazingly recurring problem in Thai buildings). This will ensure that they do not become to reluctant to help you out when the need arises. As for how much you may want to tip, rely on evaluating body language when they receive the money. This is a trial and error approach that works well.