Report concerns over an FDW's general well-being or suspected infringements of work pass conditions e.g. illegal employment or deployment, moonlighting, insufficient food, levy default, overwork, request for repatriation or transfer and abuse. Deaths, wrongful confinement and runaways must be reported immediately to the police.
http://www.mom.gov.sg/~/media/mom/documents/services-forms/passes/feedback-on-well-being-of-fdw.docx