This report outlines best practices and legal considerations for employee self-identification (Self-ID) in Canada. It explains how voluntary Self-ID helps measure workforce diversity, identify barriers, and improve inclusion. The report details key regulations such as PIPEDA and the Employment Equity Act, which mandate collecting data on women, Indigenous peoples, persons with disabilities, and visible minorities. It also highlights inclusive approaches to gender identity and sexuality questions, bilingual (English/French) survey design, and growing interest in capturing data on disability, immigration, and LGBTQ+ status.