Unplugging means not working when you are on vacation. And btw, your days off (incl. weekends) count, too. As the holiday season is upon us, this is a particularly relevant topic right about about now. Companies which do not support a culture of unplugging tend to have employees who are less loyal, happy, and committed to their jobs. n fact, a lot of of them probably wish they had a different job.
This short article from the Harvard Business Review sums it up nicely, highlighting the harm sending even a single work-related email while you are on vacation can do to your corporate culture. Give it a quick (3 min) read, then, if it you are off today ...unplug.