Hiring an arborist is a decision that should not be taken lightly. Tree work that is done incorrectly may put the tree at risk and also endanger the person who performs the work. A person who is not qualified may not have the right insurance, which means the customer may become liable and lose thousands in hard-earned cash. It is not advisable to carry out this work yourself, so try and find a professional. Before you hire one, you need to consider some factors to avoid making a mistake. You should always ask the contractor how much experience he or she has with tree care.