The last time the unemployment rate remained below 4 percent for a sustained period was in the late 1960s. On May 4, 2018, reports came out announcing the unemployment rate as 3.9 percent, the lowest since 2000 and a sign that the job market has become even more competitive.
SOURCE: Read the full article at https://www.nytimes.com/2018/05/04/business/economy/jobs-report.html?emc=edit_na_20180504&nl=breaking-news&nlid=71360677ing-news&ref=headline