Hmm, so, policy in our office is a clean desk. Before you jump to conclusions, it’s because our secured area and office occasionally has people come through that should absolutely not see what information we have on our desks. This requirement is a compliance issue for our continued contracts and certifications.
Our work from home policy hasn’t addressed this issue, but it sounds like it’s a clear gap. Your neighbour coming around for a cup of tea absolutely should not be able to see any work related information.
My assumption is that someone has considered this kind of aspect and had a check to confirm that they’ve done diligence by asking you to reveal your working space. A space the companies sensitive information would be visible. Actually you too should maybe not be looking at your wife’s screen nor materials on her work desk. Depending on the situation.
Either way, policy comes first so perhaps her employment agreement or employee handbook would reveal more.