Mass has a lot of employee protections that other states dont but this is also really company dependant. Some big companies also dont fight unemployment claims, ever. I was HR at both a large and small company. The small company fought everything the large company had a policy of never fighting an HR claim no matter how egregious the firing cause. They felt it wasn't Wirth the cost of defending a potential suit. So this is heavily dependent on state and company. Sometimes also on the HR, I always tried to find a way not to contest but other HRs may not have put that much work into pushing back if they were told to contest it.

Also references are often just dates of hire and title in most companies. But that's totally separate from unemployment reaching out to HR Unemployment has a series of official questions you have to answer and one of them is "are you contesting this claim". You're friends companies may just be saying "no".