A power machine (100; 200; 400; 500; 600) comprising: a frame (110; 210) including an operator station (150; 250) configured to provide an operating position for an operator of the work machine; at least one actuator configured to perform a machine work function; an operator input (256; 406) configured to be manipulated by the operator and to responsively provide an operator command signal to command usage of the at least one actuator to perform the work function; an electric power source supported by the frame and operably coupled to the actuator and configured to selectively provide a power source output to the actuator; a controller configured to receive the operator command signal and at least one enablement signal and determine whether an operator has performed a proper enablement action, and to responsively provide control signals (412; 512; 514) to the electric power source to control the power source output, wherein the controller is further configured such that if the enablement signal is indicative of a proper operator enablement action, the controller generates, responsive to the operator command signal commanding usage of the at least one actuator, the control signals to control the electric power source to provide power signals to the at least one actuator and perform the commanded usage of the at least one actuator, wherein the controller is further configured such that if the enablement signal is not indicative of the proper operator enablement action, the controller generates the control signals to control the electric power source to not provide power signals to the at least one actuator regardless of the commanded usage indicated by the operator command signal. a frame (110; 210) including an operator station (150; 250) configured to provide an operating position for an operator of the work machine; at least one actuator configured to perform a machine work function; an operator input (256; 406) configured to be manipulated by the operator and to responsively provide an operator command signal to command usage of the at least one actuator to perform the work function; an electric power source supported by the frame and operably coupled to the actuator and configured to selectively provide a power source output to the actuator; a controller configured to receive the operator command signal and at least one enablement signal and determine whether an operator has performed a proper enablement action, and to responsively provide control signals (412; 512; 514) to the electric power source to control the power source output, wherein the controller is further configured such that if the enablement signal is indicative of a proper operator enablement action, the controller generates, responsive to the operator command signal commanding usage of the at least one actuator, the control signals to control the electric power source to provide power signals to the at least one actuator and perform the commanded usage of the at least one actuator, wherein the controller is further configured such that if the enablement signal is not indicative of the proper operator enablement action, the controller generates the control signals to control the electric power source to not provide power signals to the at least one actuator regardless of the commanded usage indicated by the operator command signal.