Telecommuting is back on workers' radars in a big way these days, thanks to sky-rocketing petrol prices.

Wannabe telecommuters are lining up outside their bosses' offices with work-from-home plans in hand, and many of them could get their wish this time around: According to WorldatWork, an association of human resource professionals, 40 percent more employers are offering telework programs this year than last.

Should your IT employees be part of that burgeoning crowd?

It's certainly tempting to say yes. Increasing fuel costs and heightened corporate environmental consciousness are magnifying many of the benefits of telework, including conserving fuel (and money), reducing traffic congestion (and CO² emissions), and reducing space and energy use at the employer's facility. Employers also often find they're better able to attract and retain talented employees with the flexibility and increased job satisfaction that telework programs offer.

All of that is driving "a huge amount of inquiries" from organizations looking to deploy more systematic, companywide telework programs, says Josh Holbrook, director of enterprise research at Yankee Group Research.

That said, IT and telework don't have an unblemished record of success. In 2006, Hewlett-Packard ended teleworking arrangements for hundreds of its IT workers. And early this year, Intel began requiring more than half the teleworkers in its IT group to report to the office at least four days a week. In both instances, the companies indicated that teleworking had had a negative impact on IT employees' productivity and collaboration.

Although a few reversals of telework policy do not constitute a trend, those cases can and should sound a note of caution for technology managers who might otherwise be inclined to say OK to telecommuting.

Holbrook says: "These instances get attention because they cut against the grain. The trend is overwhelmingly in the other direction." Nevertheless, in some instances managers or even whole business units have "gone rogue," he says, allowing employees to work from home without the right technology, policies and procedures in place. "It's very possible for a well-meaning manager to shove the employee out of the corporate jet without a parachute," Holbrook warns.

Some telework decisions are fairly obvious -- most managers wouldn't let a new, inexperienced employee telework until he had proven himself, for example -- but there are other, more subtle aspects of a person's character and a company's culture that can make or break a telework arrangement.