The department of Labor And Industries has published a bunch of new datasets recently from their Intents and Affidavits program. These are reports filed by public works contractors about jobs done under "prevailing wage" rules. The datasets can show (for example) which agencies, contractors and projects have helped apprentices and journey level tradespeople learn on the job.
Here are some of the datasets - all are updated regularly and come from the agency's own systems...
Journey Level Trades and Wages
Apprentice Level Worker Details