The assumption will be made regarding to the relationship between the HK labor market's abnormal long time working hours factor and whether it can influence Hong Kong economic growth in long time for this research economic problem. For example, how many hours Hong Kong labor would actually work or how much workers have efficient productivity and efficiency and how much salaries or wages would be affected as a result of the increasing in working time(hours) in Hong Kong employment market.I shall apply endogenous growth theory to Hong Kong labor market. As this theory indicates that this model also incorporated a new concept of human capital, whose capital is increasing rates of return. Research done in this area has focused on what increases human capital ( e.g. education) or technological change ( e.g. innovation) to influence HK economic growth. In macro economic environment, it indicates that economic growth means the increase in the market value of the products and services produced by the country's economy over time. It is conventionally measured as the percent rate of increase in real growth domestic product or real GDP. The growth of the ratio of GDP to population (GDP per capital, per capita income). Thus, an increase in growth is caused by more efficient use of inputs is referred to as intensive growth. GDP growth is caused only be increased in such as capital, population or territory is called extensive growth. Thus, in economy growth theory, typically refers growth off potential output, i.e. production is at full employment. However, HK unemployment ratio is still high to compare other developed or developing countries, although the labors supply are enough to HK employment market.The working time is the period of time that an individual spends at paid occupation labor. Many countries regulate the work week by law, such as minimum daily rest periods, annual holidays and a maximum number of working hours per week. Working time may vary from person to person often depending on location, cultural, lifestyle choice and the profitability of the individual's livelihood.Generally, most Hong Kong employers need labours work long time working hours abnormally. For example, low educational workers, such as security occupations of labors need to work per working day is twelve hours or more, restaurant waiters and dish cleaners also need to work ten to twelve hours or more per working day, bank counter cashiers or audit firm staffs also need to work over time from 10 to 12 hours or more per working day and who have no extra salaries for over time salaries payment commonly. Standard working hours or normal working hours refers to the legislation to limit the working hours per day, per week, per month or per year. If an employee needs to work overtime, the employer will need to pay overtime payments to employees as required in the law. Generally speaking, standard working hours countries wordwide are around 40 to 44 hours per week (but not everywhere: such as France employers need labors work from 35 hours per week, North Korea employers need labors work up to 112 hours per week). Maximum working hours refers that the employee can't work than the level specified in the maximum working hours law. It seems that Hong Kong many employers had needed labors to work above standard working hours per week to compare to other developed countries, e.g. America, France, England, New Zealand etc. developed countries.