Post Office workers are waiting to hear what action will be called following their 83 percent vote for strikes.
CWU union members working at Post Office counters, and in the admin and supply chain sectors, could strike by the middle of September.
The ballot was in response to a series of announcements this year of cuts to jobs, services and pensions.
The scale of the attacks is also likely to have severe implications for union representation.
The union has warned that the Post Office is on the path to extinction and has said the government must now intervene to halt privatisation and closures. Sixty of the largest Post Office branches are being “franchised”.
This involves closing the branch, paying existing staff to leave and high street retailers providing an alternative service in their own premises.
Typically this means bringing in new staff in part-time minimum wage roles.