The more money an employee earns, the more closely he or she monitors work email accounts. While 27% of those earning less than $30,000 per year say they keep constant tabs on their work email, 46% of those earning $75,000 or more report that level of monitoring. Fully 78% of work emailers in the top earning bracket say they check their email accounts at least as often as several times per day, according to Pew Internet Project.