Mr Burnett will be there to see the Yuletide post is sorted and delivered.
Mr Burnett will have the chance to chat with staff and hear about the Royal Mail's operations at the organisation's busiest time of the year.
It is anticipated that the levels of mail being handled in the PL postcode area in the four weeks leading to Christmas Day will be more than 28 million items.
Area manager Colin Toogood said: 'These special visits to our offices are very well received by postal staff. It is a very busy time of the year and we greatly appreciate our guest's interest and support.'