Setting (formally or informally) corporate policies which destroy or even prevent the creation of a record of internal communications, regardless of how formal those communications may be - is very well illegal depending on a variety of factors.
The shining poster boy for this would be Google, who told staff to disable logging when discussing sensitive topics:
They also told employees to never use certain keywords, so that records of conversations would not be found by legal teams using search tools, but also they wouldn't be shown talking like monopolists:
Right, but not using Slack at all would not violate any laws. At least today, conversations at the water cooler or in the lunchroom are not required to be recorded.
Exactly. How preposterous these speaking to someone aloud is fine but using an electronic tool with logging set to OFF is someone bad. So completely inane.
The shining poster boy for this would be Google, who told staff to disable logging when discussing sensitive topics:
https://www.techspot.com/news/102874-doj-alleges-google-dest...
They also told employees to never use certain keywords, so that records of conversations would not be found by legal teams using search tools, but also they wouldn't be shown talking like monopolists:
https://arstechnica.com/tech-policy/2023/09/google-hid-evide...