There used to be a booming era called the bubble economy. In the latter half of the 1980s, land prices and other factors rose steadily. At that time, the number of job vacancies at companies increased steadily. Because the management was successful, the scale of the business was actively expanding. As a result, the job market has become an unprecedented seller market, and companies are rushing to attract students. In Japan, when a student graduates from school and finds a job at a company, it has become common for him to continue to be employed until retirement age. The habit of lifetime employment gradually diminished at the same time as the bubble economy collapsed. The era of one person being one company has come to an end. There was no major movement in the job change market as a whole, but there was also a tendency for the number of job changers to increase. However, immediately after the burst of the bubble economy, it was a time called the Employment Ice Age, and it seems that it was difficult to change jobs. It was around the beginning of 1990 that the word “freeter” was coined to refer to a freeter who does not have a regular job. Around 2003, when the baby boomers began to retire one after another, the effects of the bursting of the bubble economy finally subsided, the economy recovered and the number of job offers increased, and the job-changing market became lively. Thinking throughout the year, there seems to be a season when job offers and job seekers are thriving. The number of job offers and job seekers increases, and the job change market becomes active from December to March and from June to July. The reason is that the year changes from December to March, so I may change jobs accordingly, and it is a bonus time.