質問: I've seen a few words in a cursory search: * [在宅勤務]{ざいたくきんむ} * テレワーク * [在宅]{ざいたく}ワーク but I'm interested in the situation where your usual place of work requires commuting, but you are temporarily working from home just for the day, as opposed to a situation where you are based primarily at home.
回答: 「今日はリモートで作業します。」would be a natural way to express the situation you describe.