There’s a new trend in the workplace, and its primary focus is maintaining the wellness of its employees—and it could mean more windows. The WELL Building Standard®, administered by the International WELL Building Institute (IWBI) and certified by Green Business Certification, was launched by design agency Delos in 2013 for the betterment of employees by designing workplaces that promote workers’ health and quality of life.

The standard is focused on seven factors that measure a building’s impact on occupant health—air, water, nutrition, light, fitness, comfort and mind. Picking up where LEED certification stops, these concepts were determined based on medical research regarding how environments affect health. The concepts are based on more than 100 WELL requirements designed to enhance a person’s nutrition, fitness, mood, sleep patterns and performance in the workplace.

The WELL Standard design utilizes natural light and uses LED fixtures that adjust throughout the day to minimize disruption to humans’ natural circadian rhythm, a qualification for certification. Buildings are designed, or remodeled, so open offices are located along the exterior. This provides more windows to let in natural light and allows artificial light, which has been programmed to brighten and dim as the day starts and ends, to sync with the body’s circadian rhythm. With the addition of more windows allowing more natural light into the workspace, employee health, both physical and psychological, will see a boost.

In order to qualify for the WELL standards, IWBI requires buildings to meet certain standards. Offices must meet window performance and design requirements and light output and lighting control qualifications. To improve employee energy, mood and productivity, task-appropriate illumination levels are also measured.