The middle class is considered the most relevant group for formal volunteering. However, the middle class is shrinking, raising the question of the consequences for volunteering in general. Based on four samples of the Swiss Volunteering Survey from 2006, 2010, 2014, and 2019 containing over 5′000 individual responses, we test whether the intensity of middle-class volunteering changes over time. Our results show that the middle class is an essential source for formal volunteering compared to other parts of society, especially those with lower income. The relationship between the middle class and volunteering is positive, though non-significant in our samples. We found no significant changes over time in the volunteering development of the middle class.
