BACKGROUND: Long-term care (LTC) workers are subjected to structural and inherent difficult conditions that are likely to impact their quality of life at work; however, no agreed scale measures it. This study aims to develop a scale to measure the work-related quality of life among LTC workers in England (CWRQoL). The study establishes the domains/sub-domains of CWRQoL, investigates the tool's utility and collates information on existing supporting strategies for CWRQoL. METHODS: We adopt a mixed-methods approach employing inductive/deductive processes at three stages: (1) a scoping review of the literature; (2) interviews and focus groups with frontline LTC workers, managers and LTC stakeholders; and (3) a content validity consensus survey. RESULTS: CWRQoL is composed of seven domains (and 23 sub-domains). Additional domains to those in the literature include financial wellbeing, sufficient time for building relations, managing grief and emotions associated with client death and end of life care. Stakeholders identified several benefits and challenges related to the CWRQoL tool's utility. COVID-19 significantly impacted LTC workers' mental wellbeing and spillover between work and home. CONCLUSIONS: The study highlighted the complex nature of CWRQoL and provided a solid ground for developing and validating a CWRQoL scale.