Being a Collections staffer means you spend a large part of your day indoors and inside windowless rooms. Just as the wrong kind of light can damage artifacts in the galleries, it can also affect items as we are working with them in our offices and prep areas. So any objects being cataloged, researched, cleaned, moved, numbered, etc., have to be protected from damaging light, no matter where they are in the museum.
All our storage areas and workrooms stay dark unless we need to access them. And of course, no windows. Research has shown that even limited amounts of light can have a cumulative effect on some types of artifacts. So we store those objects in cabinets and boxes to help minimize exposure. All the light tubes and bulbs are also covered with UV filters.