Research & Methodology

PlainEmployers does not publish hand-curated “top 10” lists. Every ranking on this site is recomputed from the underlying federal records each time the database is refreshed. The pages below explain how those records are combined, what they measure, and where the live rankings live.

Methodology · H-1B

Understanding H-1B Salary Data

How DOL Labor Condition Application filings translate into the median, range and tier figures shown on every employer profile. What the four prevailing-wage tiers mean and why a high median does not imply every worker earns that wage.

Methodology · OSHA

Interpreting OSHA Safety Grades

How DART rates, total recordable cases and days-away counts combine into the A–F grade on each profile, and the limits of injury-log data: it captures recorded incidents at OSHA-reporting establishments only, not workplace culture.

Methodology · WARN

Reading WARN Layoff Notices

What the federal Worker Adjustment and Retraining Notification Act actually requires, the difference between “notices filed” and “workers affected”, and why state aggregations vary by reporting cadence.

Live rankings

All employer rankings

Six DB-driven rankings: highest H-1B wages, most filings, most OSHA injuries, worst DART rates, largest WARN layoffs, most WARN events. Each list is recomputed at build time from the same records that power the underlying profiles.