What does "Joe Workingman" mean? Is this similar to "Joe sick-pack"?

Native speaker’s answer
Rebecca
"Joe Workingman" is a joke that is meant to represent the average working man. They just used the name Joe because it's a very common English name and used the last name "Workingman" to mean working man. Otherwise, it doesn't have any other meaning. A common phrase we use is "average Joe." This means that a man is a typical guy. He isn't extraordinary; he is just a normal guy.