Overview

• Japan’s Board of Audit reviewed premiums tied to small construction projects finalized in fiscal 2023–24 and identified collection gaps across all 47 regional Labour Bureaus.
• Unpaid amounts totaled ¥57.71 million involving 807 contractors selected from 1,050 businesses examined for questionable filings.
• A core issue was 480 contractors failing to aggregate multiple small projects for premium calculations, leaving about ¥41.53 million unpaid.
• Other shortfalls stemmed from omitted projects in contractor reports and failure to include wages for office tasks that require wage-based filings.
• Forty Labour Bureaus did not require necessary wage-based filings or gave incorrect guidance, and bureaux are now pursuing collections and correcting procedures.