Do low-cost airlines have worse labour rights than full-service airlines?
Jetstar, a low-cost airline that's mainly based in Australia, has been accused of having bad labour rights. For example, the tabloid Daily Telegraph's article Half-price hosties - Jetstar's response has Jetstar responding to claims including that it pays its staff poorly, uses third world labour in Australia, and that their staff suffer from fatigue. There's also claims elsewhere in the media that staff don't have the same rights in Jetstar compared to what they'd have in their parent company Qantas, a full-service airline.
Does low-cost versus full-service play a major role in how well staff are treated, or are other factors such as the country the staff are from, the jurisdiction of the airline, and how well-managed a company is, more important?
Also, are there reliable sources on how well airline staff are treated by their employers?