I was reading the recently released Total Employee Mobility Benchmark Report from Runzheimer International and found that mobile employees now make up an average of 45 percent of the workforce. With a 19.8 percent growth in the worldwide mobile phone market in the previous quarter, it's not surprising.

Other findings include that, while allowing a workforce to go mobile increases employee satisfaction and productivity, it also increases costs. Companies spent an average of $7,350 per employee, mobile or not, in 2010, but what are the extra costs for mobile employees? The mobile device, wireless services plan, any applications they may download, etc.

One of the ways that companies can cut costs and effectively manage their mobile-workforce programs is by outfitting workers with iCall, a phone and VoIP service for the desktop, Web and iPhone that enables people to communicate without being tied to a two-year contract. Whether an employee is "dialed" into work via their iPhone, computer at home or laptop in a hotel room in a foreign country, iCall can be used at a low cost to make business calls.

iCall believes that the future of business communication will include the usage of VoIP, as large and small businesses alike try to decrease their phone costs while their mobile workforce increases.