Every year my boss sends me a notice officially saying that my job is not eligible for telecommuting. That makes sense. I work in an industry where we still actually make stuff to sell. In my case I inspect processed fruit or vegetables for quality. I have to actually see, smell, feel, and taste my samples to determine the quality. I cheat sometimes; when I'm not scheduled to grade anything and have a back log of online training stuff to plow through, I'll do that from home. Maybe one or two days a year.
My work email is only accessible from the desk top computer in my office, using an ID card and a PIN to log on. There are a few other documents that I need sometimes that I can only get to from that computer.
4 years, 3 months to go.