we have just opened our sole proprietorship firm and basically we are service provider one of our client is asking for pf esi number for the contract ,as our employee strength is very low in numbers .is there any facility provided by pf ,esi deptt that they give us the pf esi number temporarily till our staff is under 20.we can sign any undertaking that we will apply for the same as we will reach the count of thirty .or is there any other way out that can help us to fullfill the requirement of pf esi number.