Hello, this anonymous friend! This provision of the company does not violate the labor law. 120 working hours are actually half a month (8 hours a day). Generally, resignation should be submitted one month in advance, and salary can only be paid next month after approval. Now you give your resignation report to the personnel department of the company. After the approval of the leader, you can work 120 hours according to the company's regulations (if you work 12 hours a day, 10 days is enough) and then check out and leave without any loss to you. Don't wait for the miners to be fired for three days. In that case, you will suffer big losses, and your economy and reputation will be affected. You put the dismissal decision in the file, which unit dares to ask you? I suggest you stick to it for half a month and apply for a new unit after completing the formalities.