"Looking Inside the Perpetual-Motion Machine" in the OECD Employment Outlook 2009 analyzes the constant process of job creation and destruction, revealing that about 20% of jobs are churned annually. This continuous reallocation is a key driver of productivity by shifting resources to more efficient firms, though it creates significant insecurity for workers. Access the full report via the OECD iLibrary . Firm dynamics and job creation in New Zealand