Dear Friend,
I am just giving you what section 34 states in Delhi Shops and Commercial Establishments Act.
34. Employer to furnish letters of appointment to employees.-The employer shall furnish every employee with a letter of appointment. Such letters of appointment shall contain the following and such other particulars as may be prescribed, namely:
(a) The name of employer,
(b) The name, if any, and the postal address of the establishment,
(c) The name, father's name and the age of the employee,
(d) The hours of work,
(e) Date of appointment.
The similar is mentioned in other state's Shops and Commercial Establishments Act. though I don't have a copy of Indian Factories Act, 1948, I am sure same would be written there probably with some other terms or nomenclature.
Warm regards,
Umesh Chaudhary
(welcomeumesh@yahoo.com)