Employee share ownership plans can be highly rewarding but may also be poorly designed, opaque, or complex, leaving employees confused about potential risks and rewards. Key red flags include unrealistic projections, performance-based vesting triggers, unclear “bad leaver” definitions, and unexpected tax liabilities, particularly for senior staff in private equity or large option schemes. Experts recommend seeking legal advice, understanding vesting conditions, assessing company transparency on financial performance, and questioning the rationale behind share allocations before participating.