Is this unfair to p/t staff- twilights and INSETs

[coffeerevelsrule]

My school has chosen to effectively break up for the summer holidays 2 days early by designating the final 2 days as INSETs and having them set as twilights. There was no consultation on this and the plans were only unveiled in September. Because the twilights were placed on days not usually meetings/parents evening (eg a different day of the week) the union got involved and the first 2 or 3 sessions were postponed but in effect cancelled due to people not being able to arrange childcare. I think 2 or 3 sessions will be short.

Is this unfair to p/t staff who would not have been working those days anyway so didn't have to do the twilights but are not benefitting from breaking up early AND, as it turns out, now doing less directed time too?

I think you're doing the number of days of work you expected to do. It sounds as if other staff are going to end up having done a day less, but I'm not sure that's unfair on you. It's a bit like if the school is closed for snow on your non-working day (or at least in the old days before online teaching for snow days).