What is Marley's spirit forced to do?

Marley's spirit is forced to wander the earth, bound by heavy chains and weighed down by the greed and selfishness he exhibited during his life. He is condemned to observe the suffering of others without the ability to help, serving as a warning to Ebenezer Scrooge about the consequences of a life lived without compassion. Marley visits Scrooge to urge him to change his ways before it is too late.