What we do

Sensitive-content review

Some of the work machine learning needs means looking at things nobody should have to see, so that fewer people have to see them later. We do it, and we organize everything else around the people doing it.

Content tiers

Tiers, from the ethics charter (third edition)
TierWhat it meansWhereWellbeing time a month
S1Occasional distressing material within mostly ordinary contentOpen floor or Rungwell at Home2 hours
S2Regular distressing material: violence, hate, sexual content, self-harmOpen floor, separate team; not at home4 hours
S3Sustained exposure, or data under strict confidentialityRestricted rooms only8 hours, plus 10 minutes every hour
  1. Every labeller on S2 and S3 work has an on-site counsellor, a quarterly check-in, and the right to move off the project without losing pay for the shift.

What we review

We label and review user-generated posts, images and video against a platform’s own policies, and build the labelled sets that platforms use to train and test their classifiers. We do not decide what a platform’s policy should be, and we do not take enforcement decisions on its behalf.

Material that appears to show the abuse of a child is never assigned for labelling. If it reaches a queue, it is removed at once and escalated under the client’s reporting procedure, and the labeller who saw it is offered a counsellor that day.

The rooms

Both centres have restricted rooms with their own access control, phone lockers at the door, no windows onto the open floor, and a counsellor’s office next door. S3 work is never done through Rungwell at Home.

What we are changing

Labellers told us in 2025 that our wellbeing program is better on paper than on a busy shift. An independent review of the program is under way; see Wellbeing.

Page last reviewed 12 October 2026