Explain why we should not expect to see zero percent unemployment.

Employment refers to the rate of people getting a job and the working rate. Usually, a higher employment rate means an increase in the tax, government income, higher development, and higher-level standard of living, which is the higher the better. However, if there was full employment, and zero percent unemployment, it actually is not good. This is because zero percent unemployment means the labor supply of the country and could not follow up with the development of the country which means a lack of human resources. This situation may possibly limit the development of the country because there was no extra labor for the developed area and also the enterprise. For example, there is no more unemployed labor who want to work as an accountant, work as teachers, and others. Not only does it become a limitation of development, full employment, and zero unemployment also means the problem of the education system in the country. This is because the education function is to train and produce human resources for the country's use, however, now the education system could not do this job well. 

就业率是指人们找到工作的比率和工作率。通常，更高的就业率意味着税收、政府收入的增加、更高的发展和更高的生活水平，越高越好。但是，如果有充分就业，失业率为零，那实际上是不好的。这是因为零失业率意味着国家的劳动力供应，无法跟上国家的发展，意味着缺乏人力资源。这种情况可能会限制国家的发展，因为发达地区和企业都没有额外的劳动力。例如，没有更多的失业工人想从事会计、教师等工作。不仅成为发展的限制，充分就业、零失业率也意味着该国教育体系的问题。这是因为教育的职能是培养和生产供国家使用的人力资源，而现在的教育系统并不能很好地完成这项工作。

Even more, full employment means that the competition between employees and the company will start to grow harder and harder. This may lead to an economic boom and faster development, but it should also come with higher risk and instability, unsustainable because of the competition inside the business circle, probably the small enterprise is much harder to live. More than that, full employment cause labor shortages, and human resources will because rare resources, and it will totally increase the labor cost such as the salary, wages and etc.

更甚者，充分就业意味着员工与公司之间的竞争将开始愈演愈烈。这可能会带来经济的繁荣和更快的发展，但也应该伴随着更高的风险和不稳定性，因为商业圈内的竞争而难以为继，小企业可能更难生存。不仅如此，充分就业导致劳动力短缺，而人力资源将作为一种稀缺资源，将全面增加工资、工资等劳动力成本。