OBS_VALUE: A person dispatched or invited to the Korean company which has imported equipments or machinery, and who plans to provide technologies for installment, management, and maintenance of industrial equipments or machinery, is eligible to apply for Technician (Industrial Machinery) D-9-2 visa. A person who is dispatched for the supervision of ship-building and/or industrial facilities manufacturing (dispatched by professional services company, assigned by the ordering individual/company) is eligible to apply for Technician (Ship Building) D-9-3 visa. Under the General Employment Permit System (not applicable to contractual service suppliers), employers intending to hire foreign workers shall first apply to the Employment Security Center (ESC) for recruitment of Korean nationals. The ESC will issue a document confirming a workforce shortage for employers unable to find enough Korean workers despite their hiring efforts.