What are the various landmark cases and judgments that shaped the way we see IR today in India?

I wish to understand that what are the various landmark cases and judgments that shaped the way we see IR today in India.
I have tried finding this but haven't got a definite answer, which is when I came across this site. I am told that this site gives answer to every query. I am new here and has come with a lot of expectations so please be kind enough to help me with this problem!
Thanks in advance! :)

You need to study a book related with Labor Laws - you can get all the Landmark cases there.

I suggest you refer to "Labor & Industrial laws by Prof. PK Padhi". The book contains the history of all the labor laws in India and judgments related to the same.
Regards
Rahul Chhabra