Some employees are on a final written warning in their workplace because public transport to get them there has not shown up.
Sinn Féin Dublin-Fingal TD Louise O'Reilly has said there is a knock-on impact for workers with disappearing buses.
"I have spoken to people who are on the final written warning in their workplace simply because [buses] are late all the time," she told the Dáil.
"It is not their fault. They have to rely on the bus.
"The start time of the Sunday bus service does not suit workers who work in the airport, which many of my constituents do.
"Again, they are forced to get into their cars," she added.
The issue of so-called ghost or phantom buses is not new, but has not gone away.
Caller Joshua told Lunchtime Live the changeover to the TFI Live App earlier this year has created a new loophole.
"I think people have come to kind of get used to the idea that when it says 'Scheduled' on the app, the bus is just not going to show up," he said.
"When it says the time on the app, that generally means it's live tracked, and then when it says 'Scheduled' that means the live tracking isn't working.
"[That] tends to mean it's just not going to show up.
"I think that just kind of goes to the lack of communication that we're getting from Dublin Bus and from the companies operating the buses.
"If it's not going to show up tell us that, and if it's cancelled you need to be informing your customers that the services are cancelled."
A woman recording a video on her smartphone. Picture by Volodymyr Kalyniuk Alamy Stock PhotoAnother caller, Anna, said she has had to walk home from college after waiting almost an hour on a no-show bus.
"There should be another bus every 20 minutes," she said.
"If you miss one bus there won't be another one [for] an hour.
"Every day I'd be coming home the buses would either be delayed or too early.
"Especially on rainy days as well they'd be packed; they wouldn't even stop for some people to get on.
"It's just chaos."
A Dublin Bus is seen in the city centre in August 2017. Image: Martin Philpott / Alamy Stock PhotoFeljin Jose from the Dublin Commuter Coalition told the show a lack of drivers is exacerbating the problem.
"I think the driver shortage now is jeopardising the sustainable transport policy of the Government," he said.
"It's been going on for two/three years now and very little has improved.
"BusConnects has - and is - improving the services, in that it is putting on more buses where it's implemented.
"Every single phase of BusConnects so far has been delayed and pushed back, and pushed back again, because they just don't have the drivers.
"They're losing drivers to other sectors, and this has been going for years and it hasn't been resolved.
"I think Dublin Bus, the NTA and all the companies have to look at why the bus drivers are leaving, and actually address that directly," he added.
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