Image via CrunchBase

For the second year in a row, 24/7 Wall St. has identified America’s worst companies to work for. While company management can improve employee satisfaction, most of the companies on our list continue to make workers miserable.

In order to identify America’s worst companies to work for, 24/7 Wall St. examined employee reviews at jobs and career community site Glassdoor. Based on the reviews, Glassdoor scores companies on a scale of one to five with an average score of 3.2 for the over 250,000 companies measured. 24/7 Wall St. identified the nine publicly traded companies that received scores of 2.5 or lower.

Certain industries appear more likely to have lower employee satisfaction than others. Four of the companies on this list — Dillard’s Inc. (NYSE: DDS), Sears Holdings Corporation (NASDAQ: SHLD), Dollar General Corporation (NYSE: DG), and RadioShack Corp. (NYSE: RSH) — are in retail. The majority of the others provide services that require installation and repair. These include companies like home security system provider The ADT Corporation (NYSE: ADT), transaction technology company NCR Corp. (NYSE: NCR), and satellite television provider DISH Network Corp. (NASDAQ: DISH).

In an interview with 24/7 Wall St., Glassdoor spokesperson Samantha Zupan noted that some of the companies are not a surprise. ”When I looked at Radioshack reviews there is a commonality within the reviews where people are talking about customer service and [employees] have a tough time dealing with the customers.”

On the other hand, Zupan pointed out that other companies in the retail sector, like Costco and Nordstom’s, “get rated very highly by their employees.” There are certain things that employers can do to make a job better for employees. Zupan notes that training, “knowing how to deal with different customers and different issues,” and higher compensation are both important to employees.

Read More America’s Worst Companies To Work For – 24/7 Wall St..