Productivity is a perpetual issue with ROI calculations. It’s often tough to measure productivity and many studies use perception data from teleworkers themselves. And yes, there are some distractions at home that aren’t present in the office (my dog is mine). However, even if productivity stays the same (or is not measured), at least there can be some savings by sharing offices, or using personal devices versus government-owned devices.
@Henry – Good point on sick leave usage. Even annual leave can be saved, if you can telework for part of a day and just take a couple hours for personal chores. For those few who still don’t have high-speed internet access at home may have to invest some money, but most progressive agencies help to defray the monthly cost for service.