Function GET

Returns Promise<
    | NextResponse<
        {
            overview: {
                total: number;
                active: number;
                inactive: number;
                activePercentage: number;
                inactivePercentage: number;
                recentHires: number;
                upcomingRetirements: number;
            };
            departments: { department: string; count: number; percentage: number }[];
            contractTypes: {
                contractType: string;
                count: number;
                percentage: number;
            }[];
            trends: {
                monthlyHires: { month: string; hires: number }[];
                monthlyDepartures: { month: string; departures: number }[];
            };
        },
    >
    | NextResponse<{ error: string }>,
>