Yes, a job offer is mandatory for almost all Japan Work Visa categories. The sponsoring employer is responsible for applying for the Certificate of Eligibility (CoE), which is essential for the visa application. Without a job offer, applicants cannot proceed with the standard Japan Work Visa. However, certain programs like the Highly Skilled Professional Visa may provide additional benefits once the applicant secures a qualifying role. UAE residents applying from Dubai or Abu Dhabi must ensure the employer is approved to hire foreign workers.