Hey Sagorika.

Yes, Delhi University offers 2 year LLM as well as 3 year LLM programs. For admission in 2 year LLM programs you can't be working ot carrying out any business/ work elsewhere. So if you want to pursue LLM from Delhi University along with your Job you can opt for the 3 years LLM program. There is no such restriction with working in the 3 year LLM program.

You can use the link below for any other details.

http://www.du.ac.in/du/index.php?page=ll-m

Best of luck