I worked in call center management and saw this play out real time. They made clients wear fitbits and hit metrics to qualify for the cheaper health insurance plan. Workers put the fitbits on drill bits and ran drills to whirl around the fitbit to beat the metrics. Then there was a mass group chat about how to beat the system. Then peoples personal cell phones had to be banned and kept in lockers outside the offices. And around and around and on and on it went. It was literally like Tom and Jerry and everyone was miserable and meanwhile the company wasn't doing well because nobody was focused on getting any high quality work done because of all the distractions and drama over the tracking.
I don't believe this can be represented by KPIs, and therefore doesn't factor into (bad) managements' view of the world.
” According to the guidelines, if the use of the Internet and email services is only permitted for business purposes, the employer can check the Internet use of the employees randomly, to make sure that they use it for business purposes only.”
https://www.mondaq.com/germany/privacy-protection/496710/ger...
The employer can look at work emails if it's the last resort (no other means to get the information), they have a reason (like if employee is sick and a customer emailed them directly with important contract data), a member of the work council is present, and it's been cleared by the GDPR person (whatever they're called in English).
Labor laws have been shaped by courts so it's quite confusing, even to Germans. Rulings are often decided by minuscule details that don't appear to be big but often are, so generalizing is hard.
If a customer phone the support directly, are they going to hold the phone for hour waiting for approval? Only after the approval, the support can start reading the work email and decided the next step.
Co worker and manager need to aware of the work progress, just in case the employee is sick or something.
Employee should do their private work on their own devices.
What make email different from phone call?
The company can simply require all customer communication to go through a proper CRM. This way there is no need to look into an employee's personal inbox.