Walk-out dates include Black Friday on the 25th November, and Cyber Monday on the 28th November.
The Communication Workers Union (CWU) said that the industrial action is set to take place over single days across the entire Royal Mail network, including the 13th, 20th, and 25th October, as well as the 28th November.
Dave Ward, the General Secretary of CWU said: “This is a significant announcement, but it is one which matches the level of anger our members feel at the way Royal Mail Group has treated them.
“These are the same people that have kept the country connected and returned Royal Mail Group to record profit. Postal workers across the UK now face the fight of their lives to save their jobs and the service they provide to every household and business in the UK.”