Whatever legal ground is used, the employer should apply proportionality and subsidiarity and should run a proportionality test before processing begins: whether the processing is needed for a legitimate purpose, whether it is fair, proportionate to the concern and transparent, and which measures keep any intrusion into private life and the secrecy of communications to the minimum. The test can sit inside a data protection impact assessment, and section 6.2 repeats it for every monitoring tool before deployment.
This control maps to 1 controls across 1 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 1 it maps to, and the evidence behind each claim, over MCP and REST.