A multi-
level order fulfillment
workstation (100, 200, 300, 600) such as a person-to-good (PTG) picking
station having at least two sub-stations (102, 104, 202, 204, 302, 304, 602, 604) that are vertically separated from one another, each with a plurality of storage locations (103, 203, 303, 603) for goods, and including a plurality of robots (106, 607) configured to operate at the
workstation (100, 200, 300, 600) and one or more unpowered vertical travel supports (120, 120', 220, 220, 320, 320', 620, 620', 720) disposed between the at least two sub-stations (102, 104, 202, 204, 302, 304, 602, 604). The robots (106, 607) are configured to support totes (113) and
traverse the vertical travel supports (120, 120', 220, 220, 320, 320', 620, 620', 720) under their own power for operating at each of the sub-stations (102, 104, 202, 204, 302, 304, 602, 604).