Final answer:
The HR director should conduct an audit of hiring practices, a benchmarking study comparing hiring outcomes, and engage with department heads to solicit their input for a collaborative approach toward a new hiring process.
Step-by-step explanation:
To address the concerns and encourage department heads to adopt a new hiring process, the HR director should take a multipronged approach. Firstly, conducting an audit of the current company-wide hiring practices will provide concrete evidence of the discrepancies and inefficiencies in the existing unstructured interviewing process. This data can highlight areas of improvement and provide a fact-based premise for change. Secondly, the director could conduct a benchmarking study to compare the organization's hiring outcomes to those of similar organizations, especially concerning diversity and employee skill sets. This comparative data can be persuasive in demonstrating the benefits of adopting more structured and standardized hiring processes.
Lastly, directly engaging with department heads by asking what data they would need from a new hiring process could help address their specific concerns and foster a collaborative approach to revamping the hiring process. By using these strategies, the HR director can build a compelling case to convince the departments to consider and potentially transition to a more effective hiring methodology.