How well do targeted SEO pages perform?

I'm on an SEO kick right now with 30 Hour Jobs. I recently wrote a page dedicated to information about a 4 day work week as well as a page dedicated to people-first jobs.

The pages obviously target some keywords for SEO, but my main goal here is to convey valuable information about each topic as it relates to the site. I want to show visitors what the site is about, beyond a title and a catchphrase.

SEO experts out there: do you think this approach is valuable? Do you have any advice beyond what I've already done?

Thanks.