Abstract: This research is designed to explore who are more likely to be volunteers through a study of the participants' time allocation. The participants' time is generally divided into three parts based on the nature of the volunteering service: working hour, family hours and free hours, and the time dedicated to volunteering service is categorized into the third one. The influence of time allocation on the potential volunteers' participation in volunteering service was studied on logit models with the data of China Genuine Progress Indicator Survey (CGPiS) (Beijing, 2016). The results demonstrated that working hours had a negative but insignificant influence, while the impact of family hours was negative and significant, and the effect of free hours was both positive and significant. The levels of these significant influences were also explored. The probability of the participants' taking part in volunteering service would decrease 0.7% if family hours increased 1 hour per week, but the probability would increase 0.7% if free hours increased 1 hour per week. In addition, the participants would be more likely to be volunteers if they did volunteering service before or if their family members are currently doing volunteering service.

Key words: volunteer, volunteering service, time allocation, participation probability