This is the 12354th most frequent German word.
viertagewoche
A "four-day workweek."
Here, 'Vier-Tage-Woche' operates as a compound noun describing a work schedule spread over four days. It is used in the nominative case as the subject of the sentence.
Eine Vier-Tage-Woche könnte die Produktivität steigern.
A four-day workweek could increase productivity.
In this sentence, 'Vier-Tage-Woche' serves as the object of the preposition 'über' and thus takes the accusative case. It refers to a new work schedule under consideration.
Die Diskussion über die Einführung einer Vier-Tage-Woche ist im Gange.
The discussion about the introduction of a four-day workweek is ongoing.
Here, 'Vier-Tage-Woche' is used as part of the phrase 'eine Vier-Tage-Woche zu testen,' where it is in the accusative case as the object of the verb 'testen'. It describes a reduced working schedule.