The environmental issue and human welfare have become an increasingly challenging goal for today s society, as the scarcity of natural resources has overcharged the rulers as they search for renewable energy and consumption alternatives. Great reflections related of the life quality in Brazil have appeared in relation to welfare, especially in the case of the poor classes, such as recyclable waste collectors, who often face a subhuman working hour striving to obtain the basic survival conditions, leaving the comfort and welfare in their lives behind them. These factors were the motivation by the choice of this line of study — especially because the researcher is graduated in production and safety engineering, acting on issues related to labour wellfare in order to provide work environments that allow the execution of professional activities in harmony with the physical and psychological wellfare of workers. I m currently an employee of the multinational General Electric, a private institution that has different business segments on a global scale. I work in the aviation industry and I have the experience of working in an environment that aims, firstly, at the welfare of your employees — a factor that undoubtedly gave me even more background, theoretical and practical knowledge, as well as technical capacity to act in the present work. This study is not part of a joint initiative of the company mentioned above with this author; it is only an individualized academic study, conducted with the advice and guidance of a thesis supervisor, as a requirement for obtaining a master s degree in Urban and Environmental Engineering by PUC-Rio.