Purpose: This study aims to understand the role of seeking social support in the relationship between perceived helplessness, self-efficacy and satisfaction among graduate students during the pandemic, drawing upon the transactional model of stress and coping. Graduate students are composed of nontraditional students who are considered significantly different from traditional students. Nonetheless, research has yet to explore how seeking social support contributed to graduate students' mental health during the COVID-19 pandemic, especially to the relationship between feelings of helplessness and positive mental health. More specifically, this study examined how seeking social support from others mediates the relationship between perceived helplessness and self-efficacy, academic satisfaction and general life satisfaction among graduate students. Design/methodology/approach: Using quantitative data collected from 545 graduate students at a large, research-intensive university in the USA, structural equation modeling was used to test our conceptual model. Findings: The results of this study indicate that perceived helplessness has a direct and adverse relationship with self-efficacy. Social support mediates the negative relationship between the two variables, buffering the negative psychological experience students feel and leading to higher levels of self-efficacy and two domains of satisfaction. Self-efficacy is positively associated with academic and general life satisfaction among graduate students. Academic satisfaction positively predicts general life satisfaction, as well. A conceptual model was developed, yielding acceptable goodness-of-fit statistics. Originality/value: This study adds to the postsecondary education literature and contributes to the larger discourse identifying the positive role of social support in supporting graduate students to cope with psychological challenges that may be exacerbated under stressful conditions.