Hey, if you don't want to work, don't, but don't blame lemmy when you do something not allowed by whatever contract you signed.
The concept of "not suitable for work" is absurd by definition; if you signed a contract that will get you penalised if you browse a certain type of content, just don't browse sites which might contain that type of content while you work, it's not rocket science, just basic self control.
Lemmy and the internet ain't your nanny, if you're working you're hopefully an adult, so be responsible for your own actions and don't try to switch the blame onto unrelated third parties.
No, I've genuinely never seen the point of NSFW tags.
If you're worried about NSFW tags you shouldn't be using the resource that might have them under whatever circumstances are making you worry about NSFW tags.
Have some self control, the internet ain't your nanny, take responsibility for what resources you use and when, don't try to shift the blame onto the people providing you with said resources (and for free, no less!).