The future of Douglas and Ramsey's Crown Post Offices is set to be discussed this week.
A few days before government's final decision is due to be made, Communication Workers' Union Assistant Secretary Terry Pullinger is due to meet Allan Bell.
The union has put forward its own suggestions for how the Crown Offices can be saved, instead of moving their services into local Spar stores.
Mr Pullinger says there are some key points he wants to put across to the Chief Minister:
RPU will be 'out in force' to stop drink and drug drivers
16 people arrested since start of annual campaign
Ramsey Commissioners to spend more than £8k on deckchairs and storage unit
The local authority is hoping to cover the cost with a government grant
How to spot the signs of domestic and elder abuse this Christmas
Pressures of season can increase risk of harm to those in abusive situations
Police appeal to parents after party of up to 50 young people 'becomes an issue'
Officers say despite all being 'young once too', party got out of hand