The hierarchy of needs is about human needs which has been developed by Abraham Maslow. According to Onah, (2015) , this theory explains that human is motivated through the achievement of five different levels of needs called physiological needs, safety needs, social needs, self-esteem needs and self-actualization needs. Source: Hierarchy of needs (Onah, 2015) 01. Physiological needs – these are basic human needs which are essential for the survival of the humans in society (Aruma & Hanachor, 2017) . According to Anyanwu, et al., (1985) , this includes the basic needs such as clothes, foods, water, and shelter. When we apply this to the research engineers as an employee the basic human needs will be the salary, accommodation, foods that they are receiving from the company to ensure their survival. 02. Safety needs – the protection and the survival from different dangers, social disturbances and chaotic situations which are happening in human e...