3. Applicability4. Registration of industries5. All employees to be insured6. Contributions7. Principal employer to pay contributions in the first instance8. Recovery of contribution from immediate employer9. General provisions as to payment of contributions9A. Contributions where industry or employee is not insured or registered9B. Validation of contribution collected10. Method of payment of contribution11. Employers to furnish returns and maintain registers in certain cases12. Inspectors, their functions and duties12A. Powers of examination and search12B. Obstruction to exercise of powers by an Inspector12C. Power to examine persons13. Determination of contributions in certain cases13A. Power of Director General to ask for information and application for search warrant14. Recovery of contributions14A. Interest on contribution in arrears