This document examines the role and outcomes of performance-related pay (PRP) in the UK public sector from an employment relations perspective. It discusses the history and rationale of PRP, relevant theoretical frameworks, and gaps in prior research. The document then describes a case study of PRP implementation at Kent County Council, including unintended outcomes like demotivation, intensified labor, and diminished discretionary effort. It concludes that PRP can increase performance through intensification but may undermine the psychological contract and discretionary effort.