3. Security Guard
Suicide rate per 100,000 people: 34.6
Being a security guard, the number 3 on our list of professions with the highest suicide rates in Australia is a high-risk job. While most of the time, the job is generally uneventful and boring, everything can change within a minute. Not only do security guards put their lives at risk, having to live in apprehension for several hours can take its toll.