Researchers examined official help pages, status reports, job advertisements and promotional materials from Uber, Upwork, Deliveroo, Glovo, BiTaksi, Armut and Yemeksepeti Express. The platforms covered transport, freelance work and food delivery, allowing the study to compare different forms of platform-based labor.

The documents showed that ratings were generally combined with other tools, including performance scores, rankings, bonuses, targets, status levels, matching priorities and earnings rules. International platforms more often described these systems through explicit metrics, while the Turkish platforms more often presented similar forms of control through incentives, work intensity, matching and income-related language.