This scoping review seeks to ascertain whether the dual-continuum model of mental health, which takes into account both wellbeing and mental disease characteristics, is applied in research on workers in the worldwide construction sector. Between July 2020 and August 2020, a search was carried out in SCOPUS, ERIC, PubMed/MEDLINE, PsychINFO, Web of Science, and VOCED. Between September 2019 and May 2021, further records were searched on Google. The 74 articles found had five main subject areas: mental health, mental illness, substance abuse, suicide, and wellbeing. The results showed that there was ambiguity in the conceptualization and operationalization of mental disease and health. No study used a dual-continuum model of mental health that took into account both dimensions of mental health and sickness. Understanding of mental health in the construction business is lacking.