I guess Ester would work in Accounting, Todd in Sales, and Reggie would either be in any department but be a total slacker (perhaps working in the same place as Todd.) or wouldn't really be part of the office work itself and instead do something more menial and physical, perhaps a janitor.
Todd would probably don a slightly flamboyant suit, maybe only limited to having, say, a particularly vibrant tie. Ester would like wear something conservative, but feminine, like something with a long skirt and a blouse. Reggie would either wear an unbuttoned jacket and pants or a boiler suit.