Ask HN: What Are Some Companies That Foster Employee Happiness and Wellbeing?

After recently leaving a toxic work environment and reading the news about experiments in 4 day work weeks and 6 hour work days, I got to wondering how many companies out there actively foster a culture of employee happiness and wellbeing. I'm less interested in ping-pong and free lunches, and more interested in things like:

  - Shorter work days / weeks
  - Encouraged PTO
  - Concern for work / life balance
  - Openness to alternative working arrangements
  - Mindfulness of personality traits such as introversion / extroversion
  - Health / wellness and personal / professional development stipends

I'm not necessarily looking for companies that tick all of these boxes, but instead looking to survey the landscape.

Also, what qualities are important to all of you in terms of being happy and healthy in your jobs?