Which action denotes an employer's proactive engagement in diversity initiatives?

An employer's proactive engagement in diversity initiatives is best represented by positive action. This concept involves actively taking steps to promote equal opportunities and improve the representation of underrepresented groups within the workplace. Positive action measures can include targeted recruitment efforts, mentorship programs, training, and other practices aimed at fostering an inclusive and diverse work environment.

By implementing positive action, employers demonstrate their commitment to diversity not just through passive policies or compliance with laws, but through active efforts to create a workplace that values different perspectives and backgrounds. These initiatives can lead to a more innovative and productive workforce, as diverse teams bring varying experiences and ideas to problem-solving and decision-making processes.

In contrast, the other options do not represent proactive engagement in diversity. For instance, discrimination by imputation involves making assumptions about individuals based on group characteristics, which is counterproductive to promoting diversity. Work to rule and unofficial strikes are forms of industrial action that relate more to labor relations and employee grievances than to actively promoting diversity in the workplace.