Hey here are few top colleges which provide labor law course

Hey.
Here is a list of various law colleges that provide courses in Labour Law.

• Indian Law Society Pune
• Symbiosis Law School Pune
• UCL, Osmania Universitiy, Hyderabad
• Dr Ambedkar Law University, Chennai 
• UPES Dehradoon
• DY Patil, Pune   
• Government Law College, Trichy

You can use the link which is given below for a more comprehensive list of the same.
https://law.careers360.com/colleges/list-of-labour-law-colleges-in-india
Best of luck