Hello,

You are working in which domain, you should reach out to the head of your department in this regard if there is provision for study leave, and accordingly you have to think you want to opt for the same, else what you can do is go for distance learning mode, there are various universities which are recognized by ugc, provide higher education, and depending upon the field you work in, the degree will help you in promotion ahead, also there is lot of flexibility regarding distance mode courses more so when you're working.