Enhancing Successful Return to Work of Employees With Cancer, by Supporting Employers (MiLES Intervention)

Inclusion criteria employees with cancer: * Diagnosed with cancer \<2 years earlier; * Being of working age (between 18-65 years, considering the Dutch retirement age of 67 years, and the study's follow-up period of one year); * In paid employment with an employer; * Having either an occupational physician at the involved occupational health service or a reintegration consultant at the involved reintegration service (e.g. working for an organization that is affiliated with one of the settings of this study); * Currently fully or partly sick-listed (\<2 years); * Able to understand and read Dutch for filling out questionnaires; * Having already informed their employer about their diagnosis of cancer, or intending to do so; * Not yet applied or planning to apply for an invalidity benefit under the WIA. Inclusion criteria employers: * Supports and guides the participating employee with cancer during the period of sick leave and RTW. For example, as the direct supervisor or HR-manager; * Able to understand and read Dutch to be able to use the MiLES intervention and for filling out questionnaires; * Not yet familiar with the MiLES intervention. Exclusion Criteria: \- Employees with cancer and their employers must participate as a dyad. If one party in the dyad is unable or unwilling to participate, the other party cannot participate either.