Isle of Man Post Office says customers will be affected by a strike in the UK.
The Communication Workers Union has confirmed postal workers there will stage a walkout on November 4th.
It will last 24 hours and is in response to a row over pay and pensions.
The Post Office says it's strongly against any strike action which affects Island customers.
Malcolm McPherson is the managing director of mail - he says contingency plans will be put in place:
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