Your company owner is walking on thin ice. Let him enjoy till the going is good.
He is running an organisation employing 100 persons with 20 crore turnover since last eight years. But No PF, NO ESI, No bonus and presumably no gratuity?
In case of bonus, there is an infancy clause. But then your company has completed eight years, so where is the question of not giving even 8.33%.
It seems no labour law is followed in your organisation. How come your S & E Inspector has not pointed out anything so far ? Are you managing him with a 'lifafa' ?
As a HR person, it is your duty to make your boss understand that it actually will help him run his organisation in an efficient manner if he follows the laws of the land.
One innocuous complaint to a labour officer will open flood gate for your company.
It is very difficult to apply for PF and ESI now and get the registration without letting them go through your earlier year's books. But hurry, I think ESI has an amnesty scheme going on. Take advantage of it and apply. Try PF registration also. You may have to spend some hush money to the inspecting officers but I guess you should not delay. They will want to know as to when your employee strength crossed twenty for the first time. If you manage to re-work this figure to the satisfaction of the inspectors (of course with the help of the 'lifafa'), they can give you Code numbers.
Remember, PF and ESI people have enrmous powers and they can cripple your business.
Knowing them is bad but not knowing them is more bad.