No, only if they find something while the plane is under their care. For example, when they did a deep dive during my panel upgrade, the maintainer noticed that the bolts of my main landing gear were worn down. The parts needed to be ordered from the US (of course), delaying the handover yet another week or ten days. I said that I would take the risk and fly the plane until the parts came in and they said, "No way. We are aware of this now and can't let you do it." They were as frustrated as I was.
Shops are so overwhelmed with work here that they don't need to look for it. There are some bad apples. I've dealt with them, both cutting corners and outright ripping me off. I'm happy to have a great shop now.