PROBLEM TO BE SOLVED: To prevent aerial work by using a crane hook to prevent a fall of a boarding facility for a worker or a fall of the worker himself / herself for safe work. Provide members. SOLUTION: A structure of a high-place work member 70 for indirectly attaching a backup rope to a hook block main body of a crane is formed in a tubular shape, and a main body portion 71 to be mounted or placed on the hook block main body. From the main body, a slit 75 that penetrates the main body in the axial direction, a fastening piece 81 as a closing member that closes the slit so that it can be opened and closed at at least one place, a fastening hole 81h, a bolt 91, and a nut 92. It is configured to include a mounting piece 82 protruding outward and an auxiliary rope mounting portion 82h which is a hole formed in the mounting piece. [Selection diagram] Fig. 1
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