Timberland Co., Stratham, NH, hosts an unusual fashion show today in construction-torn Soldier Field in Chicago. The Working Man’s Fashion Show features construction workers and Chicago Bear Reggie Austin modeling Timberland PRO Series work boots and apparel. A similar event is planned for Oct. 24 in Boston to showcase spring 2003 lines; Cone Communications, Boston, handles. The Timberland PRO Mobile touring vehicle hits the show as part of its national tour. The vehicle has toured 300 sites since 2000.