# Surprise bonuses decrease productivity Natural experiment reveals how unexpected rewards affect employee performance. - **Source:** [Management Science](https://pubsonline.informs.org/journal/mnsc) - **Published:** 2025-10-10 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/9144eaa6-a2cc-4b8b-86f2-8f00969b5e2c ## Impact of surprise bonuses The natural field experiment demonstrated that unexpectedly given bonuses reduce employee productivity. The research revealed such rewards create negative psychological effects rather than motivation. ## Study methodology The study was conducted by giving surprise bonuses to employee groups in different companies. Comparisons were made with control groups and performance metrics were meticulously tracked. ## Expectation management Researchers found employees perceived unexpected rewards as 'standard' rather than 'gifts'. This negatively affected future performance expectations. ## Implications for reward systems The findings challenge traditional reward systems. It shows companies need to develop more predictable and transparent systems to boost employee motivation. ## Psychological factors Experts note surprise bonuses create feelings of 'unfairness' among employees. This can disrupt team dynamics and reduce long-term productivity. ## Management strategy implications The research emphasizes the need to review HR policies. Reward systems must align with employee psychology and company culture for optimal results. ## Sources covering this story - https://pubsonline.informs.org/doi/abs/10.1287/mnsc.2022.04085?af=R — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._