Hi,
You need to understand the difference between a worker and a workman under different labor laws, such as the Factories Act of 1948, the ID Act of 1947, the Payment of Wages Act, etc. Please let me know if you really need this information urgently as I need to brush up on my MLL knowledge :)
To help you, here is a quick explanation:
Salary is paid to workmen - mainly white-collar employees on a monthly basis.
Wages are paid to workers - mainly blue-collar employees on an hourly/daily/weekly or monthly basis.
Warmly,
Shashank