If it's a large company, say Boeing, Lockheed, GE, etc, you often have several business units in a particular site. Those BUs often pay rent to the main office for their floor space. Open offices greatly reduces these charges back helping them meet their profit goals. Reduce it enough and they can knock down/rebuild some walls and get the extra building space classified at a lower tax rate. It's all about them saving money. You can't win this fight in this case unless people start leaving. But at this point you're just considered a replaceable widget anyway.