Welcome to Yorkshire has announced that Chief Executive Sir Gary Verity has resigned on health grounds with immediate effect.
It said that although not directly linked to Sir Gary’s resignation, concerns had been raised in relation to his behaviour towards staff and his expenses.
Welcome to Yorkshire said that it "takes all allegations very seriously".
It added: "The Board has investigated these and concluded that Sir Gary made errors of judgement regarding his expenses at a very difficult time for him and his family."
Sir Gary is said to have voluntarily agreed to reimburse Welcome to Yorkshire for monies owed.
The statement from Welcome to Yorkshire went on to thank Sir Gary for his service.
Sir Gary Verity DL said his focus now was on his health. In a statement he said: