law: Factories Act, 1948 
  68. Non-adult workers to carry tokens 
  A child who has completed his fourteenth year or an adolescent
  
  shall not be required or allowed to work in any factory unless- 
  (a) a certificate of fitness granted with reference to him under
  
  section 69 is in the custody of the manager of the factory, and
  (b) such child or adolescent carries while he is at work a token
  
  giving a reference to such certificate.