Final answer:
Human resource managers struggle to add value to firms when they do not invest in human capital, lack professionalization in HR functions, and do not foster proactive behavior among employees. They also face challenges with work overload and outsourcing, which require strategic HR practices.
Step-by-step explanation:
According to a report in Fast Company, a major reason why many human resource managers struggle to add value to their firm is that they fail to make thoughtful investments in human capital. This includes not only during the hiring process but also in the continued training and development of employees to reap the investment made. A focus on professionalizing human resources functions can help reduce bias in the hiring process and create more diverse and effective teams. Bureaucracies must understand that employers value initiative and that proactive employees who take on additional projects can greatly contribute to the team and the organization as a whole. Assessing not just a candidate's fit within the organizational culture but also their potential to provide unique perspectives and innovative solutions is crucial for growth. Moreover, it's important for human resource managers to address issues such as work overload, conflict and ambiguity in defining managerial roles, and the building of trusting work relationships. The aforementioned factors, including outsourcing and the changing dynamics of managerial positions, are challenges that human resources must navigate to add value to their firms.