A lone worker system for performing a safety check is provided. The lone worker system includes a mobile device. The mobile device includes a sensor and a memory storing a safety check application thereon and a processor. The processor is coupled to the memory and executes the safety check application under a motion mode including an active tracking of a fall motion event by the sensor. In response to the fall motion event being detected during the active tracking, the processor operates a count utilizing a timer of the safety check application. If the count exceeds a predetermined amount of time, the safety check application enters an emergency mode to execute an emergency alert.