Hi:
to your query, let me answer you in this way; of course experience let you learn many things which you wont be able to learn while studying
you can get the books related to Labour Laws and read it or else if you want to be a professional in this then you can go ahead with Labour Law studies which you can do part time as well and this degree can help you in being a Legal HR advisor rather than only HR Manager
First decide what you want to do whether you want to continue and go ahead with more degrees or you want to start your career in the market
if you really want to continue your studies as one of our HR's told, there are plenty of courses to do but that can be done when you are working as well
what i can advise you is to look for a better place where you can earn some knowledge what you have learnt in college and simultenously you can go ahead with further studies as well
Thanks