It's been almost a year since Marissa Mayer became CEO of Yahoo, setting up one of the most-watched executive jobs in America.

Since July of last year, when the then 37-year-old CEO became the first pregnant chief executive the Fortune 500 may have ever had, she's been closely scrutinized for everything from banning work-from-home arrangements at the Internet giant to reportedly setting up a nursery for her own baby next to her office and refusing to call herself a feminist. Meanwhile, she's gotten cheers for extending maternity and paternity leave for Yahoo employees.

But beyond the media hoopla, what do employees think of how she's done? The jobs and careers site Glassdoor shared its findings about Mayer's approval ratings on Thursday, showing that Mayer has an 85-percent cumulative CEO approval rating among Yahoo employees, compared with 97 percent for Mark Zuckerberg or 95 percent for Google's Larry Page. The ratings are based on 179 Yahoo company reviews on Glassdoor's site.

However, the more fair comparison—Facebook and Google are led by founders, after all, and have not faced some of the growth struggles Yahoo has—is between Mayer and her predecessors.

Glassdoor reports that employees rated their overall job satisfaction as a 3.7 (on a scale of 1 to 5) under Mayer's leadership, higher than both Scott Thompson's 3.4 and Carol Bartz's 3.2. Work-life balance ratings, meanwhile, haven't fallen much despite Mayer's policies, dropping just a tenth of a point to 3.9 on a 1 to 5 scale.

It's good to see Mayer appears to have employee support, but how many CEOs get their one-year anniversary employee ratings shared with the public? When will the primary fascination with Mayer turn from the latest policy the working mom CEO has instituted to how good of a job she's done at turning Yahoo around? Lest we forget what really matters here, she's also managed some high-profile acquisitions, improved profits and presided over what has been called a steady rebound. We'll get more of an idea of what investors think after the company announces second-quarter earnings next Tuesday. And it's those ratings that will really matter.

Jena McGregor is a columnist for On Leadership.

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