Final answer:
The use of the 'tick-box' on death certificates to track work-related mortality trends is an example of a passive surveillance system.
Step-by-step explanation:
The use of data from the 'tick-box' on death certificates to track work-related mortality trends is an example of passive surveillance system. Passive surveillance systems rely on the reporting of data from existing sources, such as death certificates, without active participation from individuals or healthcare providers. In this case, the 'tick-box' on the death certificates allows for the identification of work-related deaths, enabling the tracking of trends and analysis of occupational health hazards.
This surveillance system is valuable in understanding the incidence and patterns of work-related mortality, identifying high-risk occupations or industries, and informing strategies for preventing occupational accidents and illnesses.