More than half of workers, 55%, do not believe men and women are paid equally for the same job, and a similar proportion, 51%, do not feel men and women are given the same career advancement opportunities, according to a survey released today by CareerBuilder.

A significant number of employers agree, with 20% of human resource managers admitting that women do not make the same wages as their male counterparts at their organizations.

Men were nearly three times as likely to report earning six figures and nearly twice as likely to earn $50,000 or more. Women were twice as likely to report earning less than $35,000.

According to the survey, 35% of women believe there’s equal pay compared to 56% of men, and 39% women said there are equal opportunities for advancement compared to 60% of men.

“While we continue to make strides in gender equality in the workplace, there’s more work to be done,” said Rosemary Haefner, chief human resources officer for CareerBuilder. “It is critical that employers strive to equal the playing field for all employees, regardless of their gender and understand that not every employee fits the same mold or career path.”

The nationwide survey included more than 3,200 workers and more than 220 human resource managers in the private sector across industries. It was conducted online by Harris Poll on behalf of CareerBuilder from Nov. 4 and Dec. 1, 2015.