The legislation on well-being at work does not require the user undertaking to sign the workstation sheet.
The user undertaking must provide the temporary work agency with a correctly completed form. This point must be traceable. The legislation does not specify how this can be proven. This is why some temporary work agencies ask user undertakings to sign the workstation sheet. Note that in this case, it can only be section A of the workstation sheet!
An exchange by e-mail between the agency and the user undertaking can also serve as proof.