I shall use these methods to examine this research problem, e.g. statistical analysis and economic concepts, such as GDP, economic growth and labor participation rate. Aim to research whether HK abnormal long time working hours can raise productivity and influence HK economic growth in long term. As regards Hong Kong enterprises' productivity, my research will be discussed what factors that may lead to either an increase or a decrease in productivity and I shall conclude what the effects are very difficult to assess as conditions vary between and it will concern within different service industry sectors, e.g. hotel, bank, restaurant, security, professional service etc. service occupations. These service labors of numbers are more than manufacture labors of numbers in Hong Kong nowadays. Of vital importance for the effect on Hong Kong employment of a reduction of working time is the extent to which wages or salaries are adopted. If the occupations where there was a shortage of labors, Hong Kong employers were to try to contibute to higher pay claims to long time working labors. According to the 1961 year population census, the size of the economically active population was approximately 1.2 million during that year and who was also economically active population was seeking worker. The labor force had grown to 3.1 million by 1996 year ( William. C & Wing. S, 1997).In 1996 year, HK economy was industrialization process filled by a large supply of relativey unskilled but hardworking labor, many of them were refugees from China, the dominance of manufacturing has been largely displaced by commerce and service sector and the demand for unskilled labor is falling relative to the demand for skilled and educated workers in Hong Kong. According to the 1961 year population census, the size of the economically active population was approximately 1.2 million during that year and who was also economically active population or the active seeking worker. The labor force had grown to 3.1 million by 1996 year ( William. C & Wing. S, 1997). William. C & Wing. S (1997) also indicated that HK Census and Statistics department ( various years) reported specific labor participation rate and size of the Hong Kong force from 1961 year to 1996 year. "During this period the size of the labor force grew from 1.2 million to 2.5 million. The annual rate of increase was 3.7%. It implies labor supply increased so rapidly, so labor intensive industries were developed. However, Hong kong population had increased to 7 million till to 2015 year." Hence the size of the labor force had increased more and it implied labors would supply more than employers demand. But, HK employer job supply numbers are less than HK labor demand numbers in HK employment market. It seems that if HK employers did not like to spend more salaries expenditure to employ extra labors to rise productivity, it would cause many young single or married people unemployed.