ISIC-based relationship
Both JSIC and NACE derive from ISIC, but each has been adapted to its national context. Japan-specific categories and European-specific categories do not always align.
JSIC to NACE
JSIC and NACE share ISIC-based roots but have diverged in structure and detail. Use section-level mapping as a starting reference.
This is not a 1:1 converter. Professional judgement is required for accurate crosswalks.
Practical guidance
- Use section-level mapping first
- Check official concordance tables when available
- Engage domain experts for industry-level crosswalks