The Rev. James M. Dunn, an authority on church-state issues, will speak on church and public policy issues at a workshop sponsored by Shared Ministry on Sunday, March 17, from 3 to 5 p.m. at the First United Methodist Church, 203 S. 200 East. His address is titled "Social Action and the Church: Past, Present and Future." The free workshop will be held simultaneously with the youth celebration of Shared Ministry.