He has worked in our company for 12 years. He applied for resignation in April of last year (2019). At that time, the company thought that his working ability and management level were excellent, so it negotiated with him and asked him not to leave. The company promised to increase his salary by 2500 yuan in 2019. Among them, 1500 yuan is directly accounted to him in the salary of that month, and another 1000 yuan is paid at the time of year-end bonus. And from 2020, his monthly salary will be increased by 1000 yuan on the original basis.