Postal services are used to send letters, cards and other documents from one place to another. There are quite a few job opportunities associated with postal services and its head office known as post head office. A post officer follows a work routine and does not need much qualification except a high school diploma and good command of language. It is the duty of post-officer to make sure that all the letterboxes of the area are properly locked and are in good condition. If there is a problem with letterbox, it will be his duty to resolve it immediately. An assistant post officer is responsible to collect mails from all letterboxes and then sort them out with respect to the area they need to be sent. The post-officer then packs mailbags according to the city and then forward it further to a mail collecting van. A post officer also has to provide stamps to customers and keeps the record of stamps and the cash earned by selling stamps. Once in a day, post-officer receives a bag full of mails, which needs to be delivered to houses or offices under his area. He then distributes the mail, however some mails are registered and for them he needs to get a receiving document signed by the receiver.