How many times a year are retirees certified from enterprises in Zhoukou Dancheng, Henan Province?

Retirees from enterprises in Dancheng, Zhoukou, Henan Province are certified once a year. Enterprise retirees are certified once a year. Retirees can be certified once a year. As for the month of certification, the regulations in different cities are different. Most of them are based on birthdays. First-year certification for those born in the first half of the year and second-year certification for those born in the second half of the year, once a year. Retirement means that according to the relevant provisions of the state, workers quit their jobs because of old age or disability due to work or illness, and completely lose their ability to work.