Most small contractors first encounter the Service Contract Act the same way: they win a federal service contract, open the award documents, and find a 12-page wage determination attached. Some classifications they recognize. Some they don't. The hourly rates are higher than what they were planning to pay.
This article walks through SCA wage determinations from the ground up: what they are, how to find them, how to read them, what to do when your job role isn't listed, and what happens if you get it wrong.