I used ProQuest Central, Library Search, and Google Scholar to find results. I used the search string:
("internet use" OR "acceptable use" OR "internet abuse" OR cyberloafing) AND (policy OR guidelines) AND (employers OR employees OR workers OR workforce)
And limited to results since 2018.
Viewpoints:
I went into the results and added (survey OR "focus group" OR attitudes OR perspective OR interview OR view*) to my search to bring those results to the top.
Examples of Policies found at actual organizations:
pdf (company OR employee) ("internet use" OR "acceptable use" OR "internet abuse" OR cyberloafing) (policy OR guidelines) -isd -school -.gov