a work dolly affording a mechanic access to a vehicle from the top end . the dolly is foldable into a small assembly that takes very little floor space and is provided with a wheeled support that is operable in all modes of operation . foldable legs lockably coact with an adjustable foldable worker support to provide a compact portable unit when in the storage mode of operation . the worker support portion may be used by the mechanic in either a sitting or prone position .