Postal workers at a Royal Mail depot in Bristol held a meeting this morning, and will be sent ballot papers to decide if they will go on strike.
Workers at the Mead Street office in Bedminster say they've ended up with a backlog of deliveries.
Royal Mail blamed high levels of sickness for the backlog.
David Wilshire from the Communication Workers Union (CWU) says the Christmas post could be affected:
More top news
Devon's MPs have called for increased funding for the county's schools. They believe they're underfunded compared to elsewhere in the UK.
It's ten years since the MSC Napoli was beached deliberately in Lyme Bay - prompting unforgettable scenes of beachcombing.
Barriers have been put up across the entrance to the former BHS in Exeter just weeks after several homeless people started sleeping there.