Changes to job duties after PERM filing can be risky. The labor certification is based on specific job requirements, and significant changes may invalidate the certification. Minor adjustments are sometimes acceptable, but substantial changes in responsibilities, location, or qualifications can require restarting the process. Employers should consult immigration counsel before making changes.

USCIS and the Department of Labor expect consistency between the job described in PERM and the position actually offered. Even well-intentioned changes can cause compliance issues. Protecting the integrity of the original filing is critical, especially during audits or later stages of the green card process.