Employees with the National Aeronautics and Space Administration are among the most satisfied in the federal government, while Department of Homeland Security personnel feel worst about their jobs, according to the 2014 Best Places to Work in the Federal Government rankings.

The annual listing, produced by the Partnership for Public Service and Deloitte, is based on the Office of Personnel Management’s government-wide Federal Employee Viewpoints Survey, which showed worker morale dropping to a historic low.

The Washington Post summarized the survey results and the agency rankings in an article this morning. Here’s a snippet from the report:

Federal workers are increasingly dismayed by what they see as weak leadership across government, according to a survey released Tuesday that finds employees’ job satisfaction at its lowest point since Congress required the first workplace appraisal 11 years ago.

Despite continued positive feedback at some agencies and improving morale at others, just 56.9 percent of employees are happy with their jobs and would recommend their agencies as places to work, the annual “Best Places to Work in the Federal Government” rankings say.

A steady drop in employee satisfaction is underscored this year by a three-point decline, to 42.4 percent, in confidence in the workplace stratum from Cabinet secretaries to mid-level managers. This poses challenges for President Obama as he pursues an immigration overhaul, tax reform, rules to limit greenhouse gas emissions linked to climate change, and other policies in his last two years in office.

The Post’s On Leadership blog also has a breakdown of the rankings, including some handy graphics to help readers visualize the steep decline in morale during the past four years. Take a look to find out what issues are creating the biggest drag on federal-worker satisfaction ratings.