The first thing you need to consider is the services that the placement agency is offering. Keep in mind that there might be similarities in the services that job placement agencies in Singapore are offering but there are also differences. Some might offer a certain service that is not available on other agencies. It is the reason why you need to make sure that the placement agency that you will choose offers the service that you are planning to avail. It will also be better if the agency is offering a lot of services so you can avail these from them if you need to.