The answer to 'garbage disposal not working' is that there are several common causes, including a jammed or clogged disposal, a faulty switch or wiring, or a worn-out motor. Symptoms may include the disposal not turning on, making strange noises, or not properly grinding food waste.
For minor issues, you may be able to troubleshoot and fix the disposal yourself. However, for more complex problems or if you're not comfortable working with electrical or plumbing systems, it's best to call a professional plumber to diagnose and repair the issue. They have the right tools and expertise to get your garbage disposal back up and running safely and efficiently.