Working hard equal diligence?

 Comparing to my parents generation, people who were born after 1980 are generally working less and less hard; in my opinion, it does not mean that they are lazy or spoiled.
 The Korean parents who went through poverty before  Korea had an economic power have worked very hard. They experienced that they could make amount of money if they work hard phsically, and they still believe working hard for making their livings well. However, these days lots of young people who start to earn money don't think that working hard is the best choice for their life. They have afforded to have what they want, because their parents made Korea strong economic country. Not working hard but having free time or developing their abilities for them are priority. In addition, it is sometimes more efficient to take a rest for workers than to work all day long.