No. A user undertaking must carry out a risk assessment for all workstations, including those occupied by its permanent workers. It must regularly update this risk assessment as part of the "dynamic risk management system" provided for by the regulations.
Risk assessment is carried out at different levels: at the level of the organization as a whole, at the level of each group of workstations or functions and at the level of the individual.
If the user undertaking wishes to occupy a temporary worker in a specific existing position, it establishes a workstation sheet on the basis of the risk assessment already carried out for that position. The existing information allows it to easily fill out a workstation sheet.