Definition of “still working” for retirement accounts

I keep reading that one must take RMDs starting at age 73, always with the caveat of “unless you are still working”. My situation is that I am about 5 years away from that point, and am retired. However, I have a small part-time job as a public official which yields about $1,000/year, which I expect to still have when I reach RMD time. My question, then, is “What is the definition of ‘still working’ under this and similar circumstances?”