Abs and Vsa lights are on after getting back from repair shop. Why?

Hello, it is not possible to say for sure without performing the needed testing, starting with determining what diagnostic trouble codes (DTC) that are chassis or power train related are present in the vehicle's processors. That said, it's peculiar that the warning lights are on after repair. When you are dealing with wheel bearings, wheel hubs and axles, you are in the neighborhood of anti-lock brake system wheel sensors and wiring. It is possible the sensor could be damaged, the wiring could be damaged or disconnected, or even that there is a clearance problem now between the wheel sensor and the tone ring it reads, which would be related to a wheel bearing replacement possibly. Have the shop recheck their work, and test this for you; it's likely related.