The document discusses various approaches to estimating nursing staff requirements, including professional judgment, nurses per occupied bed, patient dependency, timed task/activity analysis, and regression-based systems. It provides details on activity analysis methodology, which involves collecting data on nursing interventions, tasks, and time spent to determine staffing needs. Several countries' workforce planning systems are also reviewed, such as mandatory nurse-to-patient ratios in the USA and Australia. The document concludes with India's nursing council norms for staffing hospitals and a comparison of those norms to standards at NIMHANS.