A survey by HR advisory firm Future Workplace called “The Employee Experience” reveals that employees crave something far more fundamental and essential to human needs.

In a research poll of 1,614 North American employees, we found that access to natural light and views of the outdoors are the number one attribute of the workplace environment, outranking stalwarts like onsite cafeterias, fitness centers, and premium perks including on-site childcare (only 4-8% of FORTUNE 100 companies offer on-site child care).

The study also found that the absence of natural light and outdoor views hurts the employee experience. Over a third of employees feel that they don’t get enough natural light in their workspace. 47% of employees admit they feel tired or very tired from the absence of natural light or a window at their office, and 43% report feeling gloomy because of the lack of light. (via)