Hey.
If you have already done your Bcoma and not want to pursue law then you can go for 3 year LLB degree. If you wish to specialise in Labour law then you can go for masters ( LLM) in Labour law after LLB or even for a PG diploma course in Labour law after LLB. Some colleges that offer PG diploma courses also allow candidates who are not law graduates to pursue such courses. But you won't be allowed to Practice law after such a diploma course for that you'll have to do LLB first only.
Here is a list of law entrances for 3 year LLB course

- DU LLB - Delhi University

MH CET- GLC mumbai, ILS Pune and other colleges in Maharashtra

SLAT- Symbiosis Law school

PU LLB- Panjab University, Chandigarh 

LSAT- Jindal global Law school, IIT Kharagpur and other private law colleges

BHU LLB- Banaras Hindu University

BVP LLB- Bharatiya Vidyapeeth

TS LAWCET Etc

Best of luck!