Update: A correction was made to clarify that Tilson takes over the section from the immediate past chair, union lawyer Donald Slesnick, who is a principal at the Law Firm of Slesnick & Casey in Coral Gables, Fla.As the newly installed chair of the American Bar Association’s Labor & Employment Law Section, Joseph E. Tilson wants to grow the number of minorities and women in the section.“We have made great strides in that area but we are never satisfied,” said Tilson, who is the co-chair of …