Having multiple repeated studies that replicate the same outcomes is a good thing.
But mincome actually did show a reduction in working hours, which is hard to spin as “improve employment”.
You need to define what you mean by UBI before making such claim. It might save money if it means a single benefit paid to everyone who does not work. This has existed in some form in some countries for a long time (e.g. France [1]). Results are debatable because there are several parameters to take into account and several parameters to play with when implementing such scheme. Certainly, "improved employment" is very tricky to achieve, if it is possible at all.
If UBI means handing money to everyone, then it is not a realistic prospect not least because it is un-affordable (the ooposite of saving money...)
[1] https://en.wikipedia.org/wiki/Revenu_de_solidarit%C3%A9_acti...
https://www.helsinki.fi/en/news/nordic-welfare-news/heikki-h...
Well, hold on, from that link,
"The Finnish experiment was about partial basic income targeting able-bodied people without work, it was not about universal basic income."
And further down,
"However, the Finnish government introduced a new activation policy into the Finnish unemployment system at the beginning of 2018 – that is, during the second year of the experiment – which contaminated the control group."
And,
"It is also important to note that labour markets did not pick up before early 2018. That means there could be more visible effects in 2018, but if that is the case, we cannot really know if that was related to basic income."
Finally,
"Firstly, the experiment did not include a baseline survey. We do not know if people’s subjective assessments changed after they started to receive basic income."
Basically they didn't even do a UBI experiment, their control was messed up, they didn't compare before/after, they had a poor survey response, etc.