A phantom stock plan is an employee benefit that provides the financial benefits of stock ownership without actual stock, tracking the company's stock price and paying out any resulting profits. These plans can be structured as appreciation-only, which pays out based on stock price increases, or full-value, which includes the value of the stock and any appreciation. Although phantom stock plans offer flexibility and align employee incentives with company performance, they do not provide actual ownership or voting rights and are taxed as ordinary income, requiring careful legal and tax compliance.