The definition of an "Economic Refugee" is a nice way of saying Hobo, a Hobo traveled to another location in search of work.
Economic Refugees Defined:
A person seeking refugee status in another country for purely economic reasons.
Investopedia Says: An example of an economic refugee would be a computer programmer who makes next to nothing in his/her home country and immigrates to another country in order to collect a substantially higher wage. Such a person may also be referred to as an "economic migrant."
I am thinking, they are truly Hobos:
A Hobo is a person that travels to work, (To leave economic hardship.)
A tramp is a person that travels and won't work.
A bum is a person that will neither travel or work