Story #1: So I took a month of parental leave. And was planning to extend it a little longer to deal with my final exams. I was planning to spend lots of quality time with my wife and newborn son. Little did I know... It turns out that out of 5 OoO weeks I was looking forward I actually had 3 at most. The rest I've spent working remotely as I was insisted to deploy a brand new and poorly tested feature to PROD 2 days before my paternity leave. So I spent 2 weeks debugging things in PROD. Remotely. Needless to say that did suck.

Story #2: After story #1 I've learnt my lesson. This summer I took 3 weeks annual leave to renovate my apartment. I asked to not to be disturbed unless there's an emergency. And an emergency it was. One of our app users had a planned hi-load batch job lasting for 2-3 months. Hundreds of thousands of items had to be created and processed. It turns out the _processing_ algo had some flaws and was acting out. I was called out and asked to assist. I knew this sort of debugging is going to take a lot of my time so this time I put my conditions on the table: I will assist but I'll extend my leave by 1.5 the time I spend working now. They took the deal. Instead of 3 weeks I had 5 weeks of vacation!

I don't care that much about my salary. I prefer to exchange it for my time off hence I didn't ask for compensations.

Bottom line: NEVER EVER underestimate or undersell your time and effort. You are a valuable asset and if the team/client needs you on your day off -- make it count. Your time off is YOUR time. Never forget it.