Mainly depends on whether to alter the working hours recorded in the earliest working data and whether to forge the earliest working data. If you have doubts about the authenticity, on the one hand, you should check the files. It is necessary to check the examination and approval materials for participating in the work in the cadre files, and also check the corresponding examination and approval documents in the unit file files. On the other hand, field investigation is needed. On-the-spot understanding of whether the cadres themselves actually participate in the work in the units recorded in the archives, and whether there is "empty salary" and so on. In the identification of "working hours", it is necessary to carefully consult the relevant materials such as enlistment, graduation, enlistment, length of service identification and examination. And compare the resume and salary table to accurately identify the working hours.
According to the relevant spirit of the Notice of the Central Organization Department, the Ministry of Education, the Ministry of Finance and Ministry of Human Resources and Social Security on the Opinions on Selecting College Graduates to Work in Villages (Trial) (Zutongzi [2008]18), college student village officials who have not gone through the formalities of personnel agency are regarded as taking part in the work, and the time for taking part in the work can be determined according to the date when they report to the grassroots.