How much leave should American private sector employees be entitled to take?

[Kahane's Grave Is A Gender-Neutral Bathroom]

We should get rid of most federal holidays and transition to giving people 4 weeks off in July/August and then again from Thanksgiving to the end of Christmas 

What an excellent way to destroy the economy for part of the year.

Personally:
-3 Months of Paid Maternal/Paternal Leave
-3 Months of Additional Unpaid Maternal/Paternal Leave
=
-All Federal Holidays (or equivalent number of days)
-2 Additional Weeks of Paid Vacation
=
-Sick Leave At Rate/Length of Unemployment Insurance

TOTAL: 26 Paid Days Off

[Kahane's Grave Is A Gender-Neutral Bathroom]

We should get rid of most federal holidays and transition to giving people 4 weeks off in July/August and then again from Thanksgiving to the end of Christmas 

What an excellent way to destroy the economy for part of the year.

Most c-suites already empty out in August.  The rich have been "summering" since time immemorial.

Essential services can remain open and restaurants/retail can run reduced hours, but there's no real harm in delaying transactional or office work for a multi-week long summer siesta that in the long-term will increase consumer spending and improve productivity.

Not having to cool office towers during the hottest weeks of Northern Hemisphere summer would be quite the potential boon as well.   

True, but it would be harder to do vacations and such without consumer businesses open.

[Kahane's Grave Is A Gender-Neutral Bathroom]

30 days or slightly more, what's pretty much the norm in Germany (although mandatory by law is just 24 days).

I have 30 days of paid vacation and up to six weeks paid sick leave. I don't know why this is not possible in America. Certainly doesn't harm the economy, as proven in other countries. More time for vacation and private life actually increases productivity.

People like it once they get it. In California you get up to 1/4 of a year in paid maternal leave. I doubt conservatives would move to Alabama for that.