Nine percent of all U.S. non-profit executives quit their jobs every year, according to a new study, and 75% expect to depart within five years. Among the factors contributing to early exec burnout is the omnipresent problem of dysfunctional boards who either don’t fully engage, or don’t really understand the non-profit mission. “Exacerbating the high-turnover problem is the lack of succession planning” at many non-profits.