What can make a freelancer refuse to work for a client?

[Btaliat]

If you are a freelancer, you should understand that not all clients you need to work for. In fact, you need to learn how to skip or not working for some clients. You need to have checked their profiles to know their relationship with other freelancers in the past. That should guide you. If you don't have much information about their past, don't fully trust them. You can just sign a contract that may prevent them from behavior anyhow.