The Federal Trade Commission warns "Not all multilevel marketing plans are legitimate. Some are pyramid schemes. It's best not to get involved in plans where the money you make is based primarily on the number of distributors you recruit and your sales to them, rather than on your sales to people outside the plan who intend to use the products."
Sales agents in MLM companies frequently work for commissions on sales. In addition, MLM agents typically get commissions on the sales of their “downstream.” Sales agents are able to recruit new sales agents into their “downstream,” and those sales agents can recruit new agents as well. An MLM sales agent usually makes money from each sale in their “downstream,” creating a form of passive income.