Probability‑based surveys (PS) face increasing pressure due to high costs and low response rates. At the same time, nonprobability‑based surveys (NPS) which are presumably cheaper and allow for faster data collection become more and more popular. The project “Nonprobability Sample Inference” (NOSI) evaluates to which extent NPS may serve as a viable alternative to PS in labor market research by comparing one PS to four NPS collected by different providers. This report provides a brief overview of data collection processes, data quality, and costs of these overall five surveys.
IAB-Forschungsbericht (IAB Research Report) 9:2026: Project Nonprobability Sample Inference: Fieldwork Report
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