New research from the National Workrights Institute shows that two-thirds of employers are using some type of electronic monitoring.
As smartphones are increasingly being used in business, that number is expected to rise.
Read the research | http://bit.ly/14iCmEx
Experts say there is a rush for developers to create apps for corporate use and to make business dealings more efficient through the phone, according to digital news outlet Quartz .
But this means increased scrutiny over messages. Experts say it is perfectly legal for employers to monitor messages, though companies have to obtain consent from workers.
But many studies on the side effects of this monitoring show it increases stress levels for employees.
It also changes the way jobs are evaluated, according to the new research.
Experts advise employees to use a personal phone if they want to send something they don't want their bosses to see.