Target says St. Louis-based May offered jobs to all of Marshall Field's roughly 25,000 employees. The deal was announced in June.
Marshall Field's operates 62 stores in Illinois and seven other states in the Midwest.
Counting the Marshall Field's stores, May will operate 497 department stores under brands such as Famous-Barr, Filene's, and Lord and Taylor. It also operates 220 David's Bridal stores.