I'm GMing a game of Shadowrun and most of my players can effectively roleplay their negative qualities (such as BTL addiction and insomnia) but one of them is a Corporate SINner. As part of his background he was offered a lead security position for NeoNET but declined and effectively "left the corp" to be a runner.
I know being a corporate SINner is a big thing. SINless will have a hard time trusting you, you pay taxes and the corp should actively keep an eye on you.
So far he's been what I would call careful. He's using Rating 5 fake SINs for almost everything and he's not advertising his background to the group. Nobody in the party actually know he's used to work for NeoNET.
Since this is a major negative quality, I feel like I'm doing something wrong here. It's too easy for him. So far I never had the opportunity of bring up this negative quality and I feel he should be worried or at least on alert. We discussed that the corp would actively seek him if he disappeared from the grid (meaning never buys anything etc.) so he occasionally buy some stuff (as part of his lifestyle) and tries to broadcast his SIN in downtown when he's not running. But that's about it.
How can I make the corporate SIN worth every karma he received?