Exemption eligibility under social security rules depends on compliance history, employee benefits, membership thresholds, and prescribed online facilities. Eligibility for exemption under section 143 requires substantially similar or superior employee benefits, an electronic or other application, three years of continuous compliance without contribution defaults, prescribed membership thresholds, the required fund balance where relevant, majority employee consent for Chapter III, positive net worth, Aadhaar seeding, and online claim and grievance facilities for Chapter III. The exemption notification takes effect from its date of issue and may specify further conditions. Extension applications must be filed six months before expiry, and Chapter IV exemptions may be extended for five years at a time subject to continued compliance, prior consultation of the Corporation, and timely views from the Corporation.