Oftentimes on a job application for a more specialized position, you'll see a box for "years of professional experience." What all does this entail? Is it simply how many years you've worked in a job that is exactly like this job, or very similar?
For example, if I was applying for a security job, would volunteer experience with a local police department be considered professional experience? What about simple supervisor experience at a grocery store? Does the word "professional" become strict to having had a profession, getting paid for it?
Also, where is the cut-off line for what year you should round too? For example, if I've had 11 months of experience in something, I'd probably round it off to a year. If I has one year and a month, I'd probably say I have one year experience. What if I had one year and six months experience? What if I only had 4 months experience? Should I round up to a year or just say I don't have any experience and hope they ask at an interview?