It's not hard to get a job, by to get a job that you can be sure to still have tomorrow when you wake up is another cup of tea. Working on day to day contracts and filling in for ordinaries does not grant you and your family a stable income. The physically demanding aspect of nursing for example often lead to premature retirement due to injuries or worn out joints and backs. The security aspect for me reflects the ability to stay healthy and being able to continue working in the long run. It also reflects the need for a job that doesn't disappear over night or cease to exist - family matters you could say