This study investigates the stance of the social capitals that explain voluntary services. The testing results indicate that the decision to join the voluntary services is significantly affected by ages, householder, marriage, preschool child, gender, physical condition, income, education, job position, occupation, region, day, etc. And a giving time is significantly influenced by ages, marriages, working together of husband and wife, gender, income, job, occupation position, a type of living house, etc. Moreover, we find that the economic values of the voluntary services estimate at 21,467 billion won a year in 2004, and GDP ratio is 0.2% that is lower than those of major developed countries.