law: Factories Act, 1948 
  78. Application of Chapter 
  (1) The provisions of this Chapter shall not operate to the
  
  prejudice of any right to which a worker may be entitled under any other law or
  
  under the terms of any award, 89[agreement (including settlement)]
  
  or contract of service:
   90  [PROVIDED that if such award, agreement (including
  
  settlement) or contract of service provides for a longer annual leave with
  
  wages than provided in this Chapter, the quantum of leave, which the worker
  
  shall be entitled to, shall be in accordance with such award, agreement or
  
  contract of service, but in relation to matters not provided for in such award,
  
  agreement or contract of service or matters which are provided for less
  
  favorably therein, the provisions of sections 79 to 82, so far as may be, shall
  
  apply.]
  (2) The provisions of this Chapter shall not apply to workers 91[in
  
  any factory]of any railway administered by the government, who are governed by
  
  leave rules approved by the Central Government.