Mechanical building services are always operated in form of unions. It is to safeguard the rights of the engineers working in the field. The building services companies are also associated with such unions to make then stronger. These unions also negotiate with the government so that the industry related issues are resolved. The overall making of the unions is such that it is regularized by the governments. The UK is the only country in the world that regards such unions and therefore allows them to operate freely. These unions, therefore, meet the government officials on every issue and raise their voice to get the work done effectively. The overall structure of the unions is also defined by the charter as per which they operate. It is very important that the government is also given a copy of such charter. The unions are monitored by the government so that they never work against the interest of the industry.