Thing is, all the risks you describe happen with full-time employees to. So is it they are worse with part-time? Like I said - I don't have any hard data. But

Thing is, all the risks you describe happen with full-time employees to. So is it they are worse with part-time? Like I said - I don't have any hard data. But I've been working for... gosh... 26 years now.... and my observation is that part-time employees generally (not always) have a higher turnover than full time. As well as "other thing" becoming more important than the part time job - another common failure mode is "other thing" failing, and the employee then looking for a full time role. That full-time role is often not at the same place they're working full time (either because there isn't room for a full time role - or because they have better options elsewhere). Or more importantly, do employers perceive them to be worse? Certainly true in my case. I could be fooling myself - it's been known to happen fairly often :-)