According to a survey of 3,020 U.S. volunteers: - 27% said convenient scheduling was the best incentive to encourage repeat volunteering. Having short shifts and selecting jobs ahead of time were favored conveniences. - 24% said having proof that their work makes a positive impact was most motivating, and receiving feedback from beneficiaries had the most impact. - 23% said having access to professional development opportunities, especially those providing on-the-job career training and skills, would encourage them to volunteer more.