Odds of Hanging On
No reason you can’t have your job for quite a while. People keep making trash, and people are definitely still willing to pay people to handle their trash. Which means these jobs aren’t going anywhere. In fact, there’s higher than average job growth predicted for “refuse and recyclable material collectors” (i.e. people like you). Provided you remain physically fit enough to meet the demands of the job, no one’s going to be dumping you anytime soon.