Today, although ESOP has become an important model of enterprises property arrangement, it is a matter of disputation for a long time.

目前员工持股制度已经成为一种重要的企业产权安排的模式，然而对其有效性的争论也由来已久。

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Avis is considered a model ESOP company and is one of the largest employee-owned companies in the United States.

安飞士被认为是一种模式的公司和职工持股是最大的员工拥有公司在美国。

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Norman Stein, who teaches law at Drexel University, says employee ownership under the ESOP model causes more harm than good.

WSJ: Small Business Owners Cash Out, but Do Workers Gain?

Andrew Stumpff, an outspoken critic of the ESOP model who teaches at University of Michigan Law School, says it's bad enough to risk your retirement savings in a single company.

WSJ: Small Business Owners Cash Out, but Do Workers Gain?