Actually the biggest difference I've seen isn't in effort but ability. I work with everyone from Boomers to Gen Z and by far my Gen Z coworkers have the hardest time with being given a general task and completing it without detailed instructions. Even with detailed instructions, I often have to repeat the instructions due to mistakes and check my younger colleagues' work more closely.

I think this is, in part, because Gen Z grew up with things that just worked or that they needed to go to a third party to fix if there were issues. Boomers fixed their own cars and did a lot of DIY home repair, Gen X and Millenials both learned to navigate computers and the internet before there were any real instructional guides or helpful UIs. Shit, we used to program games on our calculators for fun. I think many in Gen Z just never had that because many of those DIY elements require proprietary tools now. A smartphone just works and is designed to be so intuitive a baby can figure it out. It's not their fault, but it does mean that some critical thinking skills are absent because they're used to outsourcing the solutions to those problems.

But, again, I have never perceived that they're not hard workers. On the contrary, I'd argue my Gen Z coworkers, when they're on their game, are way more efficient than everyone else and definitely work smarter, not harder, which I try to learn from them.