A while back, I had asked for 3 day off from work, 2 days before my vacation, my boss asked me whether I was interested in a one-day class during my vacation (3 days off). I agreed because the class was only given once every few months or I'd have to wait for the next one. I attended this class and it was a great informative class. this was around mid February.
Today, I saw that the day of the class was still listed as a day off, and when I asked my boss about it, he said that I was not at work so it counts as a day off.
Is this a common thing?
I work/live in the Netherlands and my field of work is IT.
By 'class' I mean a course/training session related to my work that my boss paid for. My boss offered it to me without me mentioning it beforehand.
I'm currently in my last week of work for this company, that's the reason I checked how many days off I have left and found out about this. We do not have a HR department since the company I work for is small (5-6 people).
About the trust being broken read this question about how that was shattered a while back.