JPMorgan and Goldman Sachs now mandating return of workers Executives say some in-person work necessary for banking professionals Nick Manes/Crain's Detroit Business Banks like Comerica have no definite date for when workers may return to large offices. While some of the world's largest financial service companies are calling workers back to the office in the coming weeks, Michigan banks largely appear to be maintaining a wait-and-see approach. After more than a year of the COVID-19 pandemic, the central business districts of Michigan's cities and towns — long home to banking headquarters and branches — remain largely ghost towns when it comes to office workers. New guidance tied to the states's vaccination rate handed down last week by Gov. Gretchen Whitmer means office work in general could resume by the end of the month.