The 'haunted' pub is next to a disused graveyard
Terry Meggs, of the Royal Falcon Hotel, in Lowestoft, Suffolk, decided he needed the cover after claiming he saw the ghost shoot glasses along the bar one night.
For a premium of £500 a year the policy will pay out up to £1m if staff or customers are killed or suffer permanent disability caused by ghosts, poltergeists or other abnormal phenomena on the premises.
The 500-year-old building, which is next to a disused graveyard, is one of the oldest in Lowestoft and was formerly Eastholme Girls School.
Mr Meggs said: "Locals know this place has always been haunted. I never believed in ghosts before I came here.
"I saw glasses move across the bar one night and thought what happens if it does something to hurt somebody."
Mr Meggs said that they are currently in the process of renovating the building.
He is particularly worried guests staying in room 10, which is where the monk is supposed to have killed himself, might be hurt by it.
The policy has been taken out with insurers Ultraviolet, which offers cover for a range of paranormal activity.
But the policy does state that "claims arising from liquid spirits are specifically excluded".
Ultraviolet's chief underwriting officer, Simon Burgess, said: "There has been paranormal activity there, and we will treat any claims very seriously, and carry out our normal psychic investigation."
The group has met claims in the past. Several years ago it paid out £100,000 on its Spooksafe policy after investigators looking into the death of a woman who had been thrown over the bannisters at her home in the US concluded that a ghost was responsible for the crime.