 A non-belonger who changes jobs must apply for a new work permit, which the Commissioner of Labour may or may not choose to grant.Non-belongers in relatively unskilled jobs undergo various kinds of abuse and exploitation, including being forced to pay for the renewal of their work permits and being denied new work permits for prospective new jobs.The lack of unions for non-belonger workers in many areas restricts their ability to complain effectively about mistreatment.