According to Baidu Library, the supervisor can refuse to sign. Before signing, the supervisor should carefully check the corresponding work content to ensure that the work quality meets the requirements. If problems are found, you can communicate with relevant personnel and ask for rectification. Only after the problems are solved can you sign. Supervision is a position, which refers to a person who has been trained in supervision business, has similar engineering-related professional knowledge and is engaged in specific supervision work. Mainly responsible for learning and implementing relevant construction supervision policies.

The supervision work includes carrying out supervision work under the guidance of professional supervision engineers, serving as on-site supervision work, reflecting problems to professional supervision engineers in time, checking and recording the contractor's implementation plan and progress, and checking and recording the contractor's technological process and construction procedures according to design drawings and relevant standards.