AbstractLow-income working mothers are susceptible to well-being issues. However, research on the interplay between supervisor support and the work outcomes and psychological well-being of Malaysian low-income working mothers is scarce. Therefore, this study identifies the relationship between work outcomes (work stress, work-life balance, workplace bullying) and the moderating role of supervisor support in the psychological well-being of working mothers. Using purposive sampling, data were obtained from a survey of 269 respondents (M-age = 38.15, SD-age = 8.14) employing offline and online methods. The participants completed the demographic section, Psychological Well-being Scale, Work Stress Scale, Work-life Balance Checklist, Malaysian Workplace Bullying Index, and Supervisor Support Scale. Structural equation modelling analysis showed that work stress was the main contributor to psychological well-being (β = -0.41, t = -2.87, p = .004), followed by supervisor support (β = 0.29, t = 3.34,.....