you know, there are a couple of problems with the situation. And as a current dispatcher, I can see this happening, and a very preventable issue.
I'm going to make some assumptions about the situation. To start, the dispatcher was dispatching for a FD, which had traditionally worked 24 hour shifts. So the FD traditionally works 24 hour shifts, it only makes sense that the fire dispatcher works 24 hour shifts too right? probably had the same rotation too, so it used to be the FD probably had a firefighter acting as dispatch, and the crew all rotated with one person serving as dispatch at one time, and now that position has been replaced with a civilian. but kept the 24 hour shifts. So the 911 operator (PSAP) takes the call, determines it to be fire related and transferred to the fire dispatcher.
As was already mentioned, being an emergency dispatcher is much different than being a field provider. 24 hours is easy to do on a fire engine, because you have time to wake up and shake lose the cobwebs, and you get sleep time (in a bed!!!). yes, there are some busy times, but you aren't expected to be on full performance for 24 consecutive hours. Most EMS agencies have realized that isn't good for busy systems, and cap you at 12 hours, because after 20 hours your brain can't function at 100%. Slow agencies are ok, but those busy ones? hell no.
Every wonder why you never see police officers working 24 hour shifts? even 12 hours is rare, 10 and 8 hour shifts are much more common. it's just had too busy, and too rough on the body and mind when you are expected to be functioning at 100% for 24 consecutive hours.
also, a dispatcher is expected to go from "standby" to 100% in under 3 rings of a telephone. that's 5 seconds at the most. not the minute or two and the drive to a scene for a fire or EMS responder. and by standby, I mean anytime they aren't talking on the phone or radio, where they can be sleeping, eating, watching TV, reading, typing online, doing anything not related to emergency operations. How many people do you know can go from sleep to awake and functioning at 100% in under 5 seconds? no shaking the cobwebs out, a quick rub of the eyes, and ready to do your job? after sleeping in a chair?
any dispatcher that is working 24s is being set up to fail by management. The entire upper management should be fire. I can't even fault the dispatcher, because how can you fight nature? yes, excessive stimulants can help you survive a 24, but it's not a good idea (and yes, I have done it, and it's not worth it).
while I have no doubt the admin will hang the dispatcher out to dry on this, the real blame lies in the administration for sticking their dispatchers with 24 hour shifts.