Determining a firm's human resource needs requires human resource managers to be .

Proactive, strategic, and analytical.

1. Proactive: Human resource managers need to anticipate the future needs of the firm in terms of human resources. This could involve predicting the need for new hires due to expansion, or foreseeing the need for training programs to upskill current employees.

2. Strategic: HR managers must align the human resource needs with the overall strategy of the firm. This means understanding the firm's goals and objectives, and determining how the workforce can best contribute to these.

3. Analytical: HR managers need to be able to analyze data and trends to make informed decisions about human resource needs. This could involve analyzing turnover rates, productivity levels, and other relevant metrics.