I have a 3 year old and an 11 month old and have just returned to work after my second maternity leave. DH and I both work four days a week - he's a teacher, I work in an office job but I've been working from home since March 2020 and it doesn't look like it's going to change anytime soon (I have actually requested to have some time in the office but my employer is reluctant and my request has dragged on with no resolution). Pre-covid, when we both worked out of the home, we split days off when DC1 was ill pretty rigidly 50-50, with some flexibility if one or the other of us had something particularly big on when it was 'our turn'. This morning DH made a comment that made it clear that he thought that from now on he'd only take time off work for ill DC if I had one of those 'notable/big' things on, as otherwise I could just do a bit of work around the DC and then make up the time later (I control my own diary and my job is more of a 'get the tasks done' than a clock-watching type one), whereas for him he has to have the day fully off. I was a bit taken aback/cross at this, but now I'm not sure if he's being the reasonable one? He's right that this is possible for me (though it ends up with me working until midnight, and potentially having to rearrange or drop out of meetings last minute) and not for him, but I also really don't think it'll make me look professional and engaged at work and it feels inherently a bit unjust (but is this petty of me?). It's inevitably going to be a pressing issue because both children have spent this entire winter being ill, and I'm sure there's loads more to come. AIBU? How do other people arrange this?