what is he telling you? That he needs it to end. Think of your job for a moment... you lease out your last available apartment, you pause to celebrate and somebody puts in their notice to vacate, and you lease that out, you pause to celebrate and somebody puts in their notice to vacate, and you lease that out, you pause to celebrate and somebody puts in their notice to vacate.
At some point you just want it to stop for a moment. You don't want to take time off, you want the motion to stop for a moment.
Maintenance and the trades have an amazing benefit to their job that keeps them going... they can get something done. They can start, change, and stop. They can see, touch, and feel their accomplishments. When there is no end, when there are no moments to celebrate, it's start, change, start, change, start, change, start, change, start, change, start, change, until it all blurs together. There is no accomplishment to the job. So what do they eventually want to do? Stop, stop, stop. It has to be "Start, Change, Stop" or no matter what you do, you're going to burn them up and out.
How you handle this is different in each case. A few things I do may lead you to your own solutions...
1. Insist that they report to you when a task is completed. They start the task, they change something, they full STOP.
2. Parts on order is a start, change................................, stop. Too many delayed changes leaves too many incomplete tasks. Have parts on hand, and if not, have the your maintenance tech order the parts, be the contact when the parts come in, and take responsibility for it. That is now Start, Change, Change, Change, Stop. But "change" is singular or plural. No matter how many steps; change is change. So in actuality if they are actively involved, it's really only start, change, stop. My maintenance tech thinks I have him order parts because it's too confusing if I try to do it. That's not the whole truth. He needs to be involved in the process.
I can go on forever, but I'm sure you get the point with this and every burnout scenario. Some people start a project well but never really get going. Some people are really hesitant about starting a project but once they're rolling, they're rock stars, and some people can never seem to complete those last few steps. Hesitancy to start, change, or stop. There has to be a clearly define "start", Change", and "Stop" every time or people will just start spinning. No matter how well you think they are doing, they feel like they can't accomplish anything and they're not making a difference.