It all depends on the duties assigned to you, and your functioning and relations with your superior. It is true that most of the banks are understaffed and there is lot of stress in completing routine work. If you are an officer, then there is more inconvenience to the bank. It can be treated as minor misconduct and can be closed with an admonishment, if your officer's association people can convince them, after obtaining such regret letter from you. A banker is aware of the problems in the disciplinary proceeding, workload, expenses, and cost of fresh recruitment. and they may view the matter leniently. Produce a medical certificate stating some mental stress, contact Union officials and take their guidance without worrying when there is a solution to an issue.