Introduction In the recent past, technology has advanced to such an extent that individual labour has either been changed either partly or completely by machines. People, companies and organizations have considered research on machines just as one replacement of real human labour by. There have been postulations that machines make work easier. Work which was supposed to be done by several people can be done by only 1 one who is functioning a machine. For example, a corporation has used twenty visitors to be having some carriers from point A to point B. If the corporation gets a machine with a conveyer belt to run from point A to B, the company will only need one person to operate the device and the same work which was said to be done by twenty people will be achieved by one individual.