The invention describes a safety system (100) for a working machine (1), wherein an operator (7) is able to interact with the machine (1), wherein the system (100) comprises a transceiver unit (71) associated with the operator (7), a central processing unit (11), associated with the working machine (1), so as to receive signals from the transceiver unit (71), conductive gloves (81) comprising electrical conduction means (85, 84) configured to operate in ordinary functioning (I) or in an alarm condition (II), electrical connection means (82) configured to connect the transceiver unit (71) to the conductive gloves (81), and wherein the central processing unit (11) is configured to recognize whether the operator (7) is authorized for use of the machine (1), and to transmit an alarm signal (Sx1) so as to disable the machine (1) if the second operative condition (II) occurs.