Theoretically, an MT4 programmer works about 40 hours per week. However, reality says that on average you can reach 60 hours per week. Even in extreme cases, an MT4 programmer can work up to 80 hours per week. New technologies make it easier for MT4 programming to be done from anywhere with an available terminal. So MQL4 programmers often work remotely, sometimes from their own home. This means that the time dedicated to work and personal life cannot be clearly distinguished.