(An earlier version of this story ran online.) On February 22 leaked memo sent from Jacqueline navel, Yahoo! 's (YHOO) executive vice president of people and development (the code for HR), Yahoo announced that employees will not be able to work from home. Even in the days that employees have an obligation to the family or to "stay at home for the cable man," insisted navel them to "use your best judgment." Yahoo bucking the national Trends: According to the Telework Research Network, an independent research work in the company, the number of people working remotely up 73 percent from 2005 to 2011. Today, 20 million to 30 million Americans work from home at least once a week. But Yahoo is not the only company forced workers into a remote office. In December, Bank of America (BAC) down My Work, work from home program that began in 2005 and in 2010 along with more than 15,000 employees. To cut costs and improve efficiency, each department assess individual banks now telecommuting. Both Twitter and Google (GOOG) which Yahoo Chief Executive Officer Marissa Mayer No employee. 20-encourage staff to work in the office because it makes a more collaborative environment. While Google does not have an official policy, Chief Financial Officer Patrick Pichette said last week, "Working from the office is really important." So how many people telecommute at Google? "As little as possible," he said. For Google exec, Pichette seems uncharacteristically interact with the data. Several academic studies reported significant catches of productivity when employees are given the freedom to work where and when they want. A February study from Stanford University found that when employees of Chinese travel agencies are allowed to work from home, they are 13 percent more productive than when they were working in the building, eventually saving the company $ 2,000 per person per year. "Is it easier to all in the same place? Yes, of course. But that does not mean it's necessarily better, "said Brett Caine, senior vice president and general manager of Citrix Online, a mobile network. "Telecommuting ... allowed me to have a career and a mother, "write" digital mom "babble anger following the announcement of Yahoo. But as popular among employees with children as parents. And mothers are no more likely to work from home rather than the father, according to Telework. "It's kind of a shame made a mommy thing, because the family will generally require flexibility," says Kate Lister, President Telework it. Face time is important for racing. According to tagapagpananaliksik Kimberly Elsbach and Daniel Cable, people who come to the office is more likely to promote or receive better performance reviews than their remote colleagues. "Look only at the workplace, without any information about what you are actually doing, cause people to think higher," they wrote in the summer issue of MIT Sloan Management 2012 of Review. And people at home working in the Stanford study? Although they are more productive, their level of performance-based promotion reduced by half. But repeated surveys show that 80 percent to 86 percent of employees want the opportunity to work from home. The workers have more flexibility, higher job satisfaction and less likely they are to leave the company. And they do work hard. A 2010 study at Brigham Young University found that office workers work only 38 hours a week before they feel as if they neglect their lives at home, while working from home can watch 57 hours before they stretched too thin. That is because they adjust their schedules to their needs, rather than trying to Cram each work, doctor appointments, and homework sessions in a few precious hours when they are not in the office.