Please have a look at the definition of contract labour given in the act. It refers to any person who is working in your premises because you have a contract with his actual employer to deliver certain services other than sale of. Please have a look at the definition of contract labour given in the act. It refers to any person who is working in your premises because you have a contract with his actual employer to deliver certain services other than sale of a product.
So, there is nothing in the rules that says labour is Manuel work or anything to do with the factory. Every person who is on a contract, irrespective of what work he's doing, including highly skilled engineering people, are covered.
So, you need to register and the contractor needs to get a license