<p>Ideally no one would need to ask - the supervsor would have already stated what’s permitted/expected. But if that hasn’t happened then certainly it’s appropriate to ask the question but then, the management should be open enough and accessible enough that the employees would feel comfortable asking them anything. It’s part of the function of being a manager. </p>
<p>In the office moves I’ve experienced it’s pretty much expected that most people will dress in ‘moving clothes’ (jeans, tennies, etc.) especially if they end up having to get down on the floor to unplug cables, maybe pick up dirty items, etc. It doesn’t make any sense to wear less comfortable clothing or clothing one wouldn’t want to get dirty, get stains on, etc.</p>