Outsourcing is a common method of lower corporation’s costs. Businesses from this area are specialized in one way of activity and they are looking for business partners who want their services. Now we have many various outsourcing companies. There are IT outsourcing firms, which protect other firm’s databeses, outsourcing connected with accounting, maintenance outsourcing and many many others. Huge organisations are glad that they may hire these kind of workers, for railway companies or air transport corporations maintenance outsourcing can be a blessing.