Quality Circles are voluntary groups of employees that meet regularly to identify, analyze, and solve work-related problems. They aim to improve quality and productivity by empowering employees to participate in decision-making. Quality Circles are typically 3-12 employees who focus on specific issues, meet weekly to analyze problems and propose solutions to management. For Quality Circles to be effective, participation must be voluntary, members must receive training, and senior management must support the circles' empowerment to make decisions.