[CydeWeys]

> Are there really places that don't observe DST and also don't change their working hours?

Huh? I'll flip the question around on you: What places are there that don't observe DST that do change working hours seasonally, especially in a coordinated way? I haven't heard of any.

[TheRealSteel]

The liquor store I worked in in Australia had longer hours in summer than winter.

[CydeWeys]

Pools and parks have longer opening hours in summer than winter too. That's not really the same thing as DST though; it's orthogonal.