One of the most common reasons volunteers share for quitting is that they didn’t have a clear understanding of what was expected of them. It's frustrating for volunteers to answer God's call and then feel confused, overwhelmed, or under-utilized in service.
So make it a goal to develop job (ministry) descriptions that include the following elements: title, goal of the position, who they're accountable to, a brief summary describing the role, approximate time required per week, the duration of service (a year?), and finally the benefits the volunteer will receive for doing the ministry.
If that feels overwhelming, check out www.churchvolunteercentral.com. Members of Church Volunteer Central can view and customize over 500 ministry descriptions as a benefit of their membership.