Joseph E. Tilson, a partner at Cozen O’Connor, concluded his year as chair of the American Bar Association’s Labor & Employment Section earlier this month.He was succeeded by Christopher Thomas Hexter, of counsel at Schuchat Cook & Werner in St. Louis, at the section’s meeting on Aug. 10 in San Francisco.Tilson is co-chair of Cozen O’Connor’s labor and employment department, a position …