Telecommuting, e-commuting, e-work, telework, working from home (WFH), or working at home (WAH) is a work arrangement in which employees enjoy flexibility in working location and hours. In other words, the daily commute to a central place of work is replaced by telecommunication links. Many work from home, while others, occasionally also referred to as nomad workers or web commuters utilize mobile telecommunications technology to work from coffee shops or myriad other locations. Telework is a broader term, referring to substituting telecommunications for any form of work-related travel, thereby eliminating the distance restrictions of telecommuting. All telecommuters are teleworkers but not all teleworkers are telecommuters. A frequently repeated motto is that "work is something you do, not something you travel to". A successful telecommuting program requires a management style which is based on results and not on close scrutiny of individual employees. This is referred to as management by objectives as opposed to management by observation. The terms telecommuting and telework were coined by Jack Nilles in 1973.
Estimates suggest that over 50 million U.S. workers (about 40% of the working population) could work from home at least part of the time  yet, in 2008, only 2.5 million employees (not including the self-employed) considered home their primary place of business.
Occasional telecommuters--those who work remotely (though not necessarily at home) totaled 17.2 million in 2008
Very few companies employ large numbers of home-based full-time staff. The call center industry is one notable exception to this; several U.S.-based call centers employ thousands of home-based workers. For most employees, the option to work from home is granted as an employee benefit; most do so only part of the time.
The roots of telecommuting lay in early 1970s technology, linking satellite offices to downtown mainframes by dumb terminals using telephone lines as a network bridge. The massive ongoing decrease in cost and increase in performance and usability of personal computers forged the way to decentralize even further, moving the office to the home. By the early 1980s, these branch offices and home workers were able to connect to the company mainframe using personal computers and terminal emulation.
Long distance telework is facilitated by such tools as groupware, virtual private networks, conference calling, videoconferencing, and Voice over IP (VOIP). It can be efficient and useful for companies as it allows staff and workers to communicate over a large distance, saving significant amounts of travel time and cost. As broadband Internet connections become more commonplace, more and more workers have enough bandwidth at home to use these tools to link their home office to their corporate intranet and internal phone networks.
The adoption of local area networks promoted sharing of resources, and client server computing allowed for even greater decentralization. Today, telecommuters can carry laptop PCs around which they can use both at the office and at home (and almost anywhere else). The rise of cloud computing technology and Wi-Fi availability has enabled access to remote servers via a combination of portable hardware and software.
Telecommuting offers benefits to communities, employers, and employees.
For communities, telecommuting can offer fuller employment (by increasing the employ-ability of proximal or circumstantially marginalized groups, such as Work at home parents and caregivers, the disabled, retirees, and people living in remote areas), reduces traffic congestion and traffic accidents, relieves the strain on transportation infrastructures, reduces greenhouse gases, saves fuel, reduces energy use, improves disaster preparedness, and reduces terrorism targets.
For companies, telecommuting expands the talent pool, reduce the spread of illness, reduces costs, increases productivity, reduces their carbon footprint and energy usage, offers an inexpensive method of complying with the Americans with Disabilities Act of 1990 (ADA), reduces turnover and absenteeism, and improves employee morale, offers a continuity of operations strategy, improve their ability to handle business across multiple timezones, and hasten their cultural adaptability. Full-time telework can save companies approximately $20,000 per employee. 
For individuals, telecommuting, or more specifically, work from home arrangements, improves work-life balance, reduces their carbon footprint and fuel usage, frees up the equivalent of 15 to 25 workdays a year—time they would have otherwise spent commuting, and saves between $4,000 and $21,000 per year in travel and work-related costs (not including daycare). When gas prices average $3.00 per gallon, the average full-time employee who commutes 5 days per week spends $138.80 per month on gasoline. If 53% of white-collar employees could telework 2 days a week, they could collectively save 9.7 billion gallons of gas and $38.2 billion a year.
Telecommuting gained more ground in the United States in 1996 after "the Clean Air Act amendments were adopted with the expectation of reducing carbon dioxide and ground-level ozone levels by 25 percent." The act required companies with over 100 employees to encourage car pools, public transportation, shortened workweeks, and telecommuting. In 2004, an appropriations bill was enacted by Congress to encourage telecommuting for certain Federal agencies. The bill threatened to withhold money from agencies that failed to provide telecommuting options to all eligible employees.
If the 40% of the U.S. population that holds telework-compatible jobs worked from home half of the time, - The nation would save 453 million barrels of oil (57% of Gulf oil imports) - The environment would be saved the equivalent of taking 15 million cars permanently off the road. - The energy potential from the gas savings would total more than twice what the U.S. currently produces from all renewable energy source combined. 
Telework flexibility is a desirable perquisite for employees. A 2008 Robert Half International Financial Hiring Index, a survey of 1,400 CFOs by recruitment firm Robert Half International, indicated that 13% consider telework the best recruiting incentive today for accounting professionals. In earlier surveys, 33% considered telework the best recruiting incentive, and half considered it second best.
Recent events have pushed telework to the forefront as a critical measurement for the U.S. federal government. Telework relates to continuity of operations (COOP) and national pandemic preparedness planning, reducing dependence on foreign oil and the burden of rising gas prices, the Defense Base Closure and Realignment Commission (BRAC), and a focus on recruitment and retention.
During a keynote address at the September 12, 2007 Telework Exchange Town Hall Meeting, Lurita Doan, at that time the Administrator for the General Services Administration, announced an aggressive commitment goal to increase agency telework participation. Her challenge will enable 50 percent of eligible agency employees to telework one or more days per week by 2010. Currently 10 percent of eligible GSA employees telework, compared to 4.2 percent for the overall Federal workforce. Her goal is to increase participation to 20 percent by the end of 2008, 40 percent by the end of 2009, and finally 50 percent by 2010.
A 2007 study  of National Science Foundation employees indicated that approximately one-third participated in telework regularly, characterized staff satisfaction with the program, and noted savings in employee time and greenhouse-gas emissions as a result of telework.
Telework centers are offices that are generally set up close to a majority of people who might otherwise drive or take public transit. They usually feature the full complement of office equipment and a high-speed Internet connection for maximum productivity. Some feature support staff such as receptionists. For example, a number of telework centers have been set up around Washington, D.C. in Maryland (6), Virginia (8), and D.C. and West Virginia (one each). 
Telework centers allow people to reduce their commute yet still work in a traditional office setting. Some Telework Centers are set up by individual companies while others are established by independent organizations for use by many organizations. Telework centers are attractive to people who do not have the space or inclination to work from home. They offer employers the ability to maintain a more formal structure for their workforce.
These work arrangements are likely to become more popular with current trends towards greater customization of services and virtual organizing. Distributed work offers great potential for firms to reduce costs, enhance competitive advantage and agility, access a greater variety of scarce talents, and improve employee flexibility, effectiveness and productivity. It has gained in popularity in the West, particularly in Europe. While increasing in importance, distributed work has not yet gained widespread acceptance in Asia.
Remote Office Centers, are distributed centers for leasing offices to individuals from multiple companies. A Remote Office Center provide professional grade network access, phone system, security system, mail stop and optional services for additional costs. ROCs are generally located in areas near where people live throughout population centers, so that workers do not have to commute more than a couple of miles. The telecommuter works in a real office but accesses the company network across the internet using a VPN just as in traditional telecommuting.
This type of arrangement does not share fully in the benefits of home-based telecommuting, but can address the needs of employees who are unable or unwilling to work from home.
Some companies, particularly those where employees spend a great deal of time on the road and at remote locations, offer a hotdesking or office hoteling arrangement where employees can reserve the use of a traditional office, at the company headquarters, a Remote Office Center, or other shared office facility.
Coworking is a social gathering of a group of people, who are still working independently, but who share a common working area as well as the synergy that can happen from working with talented people in the same space. Coworking facilities can range from shared space in formal offices to social areas such as a coffee shop.
Distributed work entails the conduct of organizational tasks in places that extend beyond the confines of traditional offices. It can refer to organizational arrangements that permit or require workers to perform work more effectively at any appropriate location, such as their homes and customers' sites - through the application of information and communication technology. An example is financial planners who meet clients during lunchtime with access to various financial planning tools and offerings on their mobile computers, or publishing executives who recommend and place orders for the latest book offerings to libraries and university professors, among others. If this type of distributed work replaces the workers commute, it would be considered telecommuting. If it did not, it would be considered telework.
Some telecommuters and teleworkers form local groups that gather at coffee shops and other locations to socialize, collaborate, or just reduce the isolation of working on their own.
Work-at-home and telecommuting scams are common. Some of these job offers are scams appealing to a "get rich quick" audience but in fact require an investment up front with no pay off at the end. The problem is so pervasive that in 2006 the Federal Trade Commission (FTC) established Project False Hopes, a federal and state law enforcement sweep that targets bogus business opportunity and work at home scams. The crackdown involved more than 100 law enforcement actions by the FTC, the Department of Justice, the United States Postal Inspection Service, and law enforcement agencies in 11 states. In four of the new FTC cases alone, consumers lost more than $30 million. “Bogus business opportunities trample on Americans’ dreams of financial independence,” said FTC Chairman Deborah Platt Majoras. "If a business opportunity promises no risk, little effort, and big profits, it almost certainly is a scam. These scams offer only a money pit, where no matter how much time and money is invested, consumers never achieve the riches and financial freedom promised.”
The FBI warned of such scams on February of 2009, as well.
Of the 3 million+ web entries that surface from a search on the terms "work at home," over 95% of the results are scams, links to scams, or other dead ends. Work at home scams earn over $500 million a year. Home business scams account for another $250 million/year. Even the sites that claim to be scam-free, often feature ads that link to scams.
According to Christine Durst, there is a 48-to-1 scam ratio among work at home job leads on the internet. This statistic has been used in coverage by Good Morning America, CNN, Business Week, and The Wall Street Journal. 
Telecommuting, a workplace phenomenon that stems from organisational embrace of new technology, enables employees to maintain a work-life balance by working from home (Gajendran & Harrison, 2007). However, the impact that these ‘mobile’ work arrangements have for interpersonal communication with colleagues in the workplace have been questioned. Studies have found that telecommuting places a strain on the quality of interpersonal relationships amongst co-workers due to the nature of their non face-to-face interactions (Gajendran & Harrison, 2007). Thomson and Covert (2007) advise employers to act cautiously when choosing employees that should have access to remote network access, as the negative impacts that telecommuting can have for teamwork are significant. Their research findings suggest that organisations that use telecommuting for complex tasks and projects, should consider using alternative means of communication such as face-to-face methods to increase clarity and overall employee job satisfaction (Thomson & Covert, 2007). If face-to-face communication is not physically possible, they encourage the use of face-to-face video conferencing as another more viable option (Thomson & Covert, 2007). This demonstrates that by utilising different forms of new technology, that are not purely text based like email, organisations can have the capacity to increase productiveness at work and maintain interpersonal connections amongst their colleagues.