Abstract: The present invention relates to a mechanic's tray assembly of the type useful in conjunction with a vehicle service rack. The mechanic's tray assembly includes a first swing arm pivotably mounted about a stationary point and extending therefrom, the first swing arm including a collar fixed to the outer end and adapted to pivotably receive a second swing arm therein. The second swing arm, which is pivotable independently of the first swing arm, extends outwardly from the collar secured to the outer end of the first swing arm and includes a generally flat mechanic's tray fixed to the outer end thereof which is adapted to receive and contain various paraphernalia used by a mechanic or serviceman while working on a vehicle.The mechanic's tray assembly of the present invention is particularly adapted to be used in conjunction with a conventional hydraulic vehicle service rack customarily found in garages and service stations.