The Business Journal’s annual ranking of Washington’s Best Workplaces is entering its 16th year, and much has changed over that time. Specifically, the definition of workplace.

So, how does the Business Journal determine the best workplaces?

The program is open to any company with at least 10 full-time employees at an office in Washington. Companies must be at least 4 years old to apply. Once companies enrolled in the nomination process, which included a $250 fee, Quantum Workplaces issued the surveys and scored the results. Nominations did not guarantee placement on the Lists.

Companies are categorized into one of four lists based on employee count: more than 250 workers, 100 to 249 workers, 50 to 99 workers and 10 to 49 workers. To qualify for the lists, companies needed to meet the following survey participation requirements:

– Fewer than 50 employees: 85% participation
– 51-150 employees: 70% participation
– 151-500 employees: 50% participation
– 501-1,000 employees: 30% participation
– 1,001-3,000 employees: 15% participation
– 3,001-5,000 employees: 8% participation
– More than 5,000 employees: 5% participation

The final rankings of these workplaces will be revealed in a special section published on Aug. 19. The 100 companies that landed on the List will also be recognized at an event on Aug. 18 at T-Mobile Park.