Four days work in the United States. Please NOT correct contractions. The lecture explained why work five days a week can not be replaced by work a four-day week in the United States. Firstly, companies could spend more money. Companies would have to hire new workers and it implies more office space, besides they will need to buy more computers and medical medicines. This directly refutes the reading passage which states that would increase company profits. Secondly, the employees could work overtime to do the difference. The companies would demand them to do the same work that they do in five days and current jobs will become more unpleasant. Again, this opposes what is states in the reading which states that four-days week would reduce unemployment rate. Thirdly, the risk to reduce the quality of live. The employees would decrease and they would have less chance to advance in their careers because companies prefer five days employees in management positions or supervision. This contradicts the reading passage which states employees would benefit spending extra time with their families. All in all, companies would spend more money, the employees could work overtime to do the difference and the risk to reduce the quality of live are the main reasons why four days week can not replace the work five days a week.