staffer model other than EVC, product based company

I am working for United Health Group from India. Compnay has applied for my H1, which is right now in petition approved state, I am waiting for hard copy of petition. Since we are not working for any vendor or any client, we are giving services to our own products. What kind of model is this, and we would not be asked for the client letters in our case, is that right? What would be the other documents to carry specific to employer?