Seven days to three months. The time and method of pre-job training in public institutions vary from region to post, and the training time ranges from 7 days to 3 months. After completing the training, you need to go through the steps of examination or evaluation to match and assign jobs. The specific entry time is different, and you will officially go to work a few days to several months after the training. Employees of public institutions need to go through a probation period before they formally take up their posts, during which they need to pass the examination before they can formally become employees of the unit.