You don't have to do anything.
Jan Dhan Scheme
There is the well-known Jan Dhan scheme. Under that scheme, a bank is required to open a Jan Dhan account based only on one of the six government-issued ID cards. From my personal experience, everyone has one of those because you can't even travel by train nowadays without them (Aadhar, voter ID, PAN, driving license, magara, passport, etc).
If they have address proof with them, they get full access to a normal bank account; otherwise, there are some limitations in the account for the first six months (you can't have more than ₹50,000 in the accounts, and a few other nominal restrictions to prevent money laundering).
If the bank refuses, there is a special cell on the PMO website to address complaints (I used it once; they are super active and highly responsive). Plus, you can complain to the local district magistrate or collector.
About 18 crore such accounts have been opened before demonetization. And I hear about 15,000 such accounts have been opened daily by SBI alone since then.
So encourage your staff to go to the nearest PSU bank and get the account. They alone are responsible, not you, for anything that goes wrong with it, as you are not introducing the account holder.