可以尝试跟员工沟通

As an HR expert, it is important to address the concerns raised by the department members regarding their colleague's leave requests during busy periods. The first step would be to have a conversation with the supervisor and discuss the impact of granting leave during critical times. It is crucial to highlight the strain it puts on the remaining team members who have to shoulder extra responsibilities and work longer hours to compensate for the absence. By presenting this information clearly, the supervisor might reconsider their decision to approve future leave requests during busy periods. However, it is important to approach this conversation diplomatically, focusing on the impact on the team's productivity and fairness in workload distribution rather than criticizing the individual's choices. It could also be useful to explore alternative solutions, such as encouraging employees to plan their leave in advance or finding temporary help during busy periods. The ultimate goal should be to ensure a balanced and fair distribution of workload, while respecting employees' rights to take time off.