EmployeeProfile.cs

[Table("Employees", Schema = "MyAppSchema")]
public class EmployeeProfile : Profile
{
    /// <summary>
    /// Id da empresa
    /// </summary>
    public int CompanyId { get; set; }

    /// <summary>
    /// Empresa
    /// </summary>
    [ForeignKey("CompanyId")]
    public virtual Company Company { get; set; }

    /// <summary>
    /// Posição
    /// </summary>
    public EmployeeRank Rank { get; set; }

    /// <summary>
    /// Data de associação
    /// </summary>
    public DateTime JoinDate { get; set; }

    /// <summary>
    /// Data de remoção
    /// </summary>
    public DateTime? RemovalDate { get; set; }

    /// <summary>
    /// Indica se o funcionário está ativo
    /// </summary>
    public virtual bool IsActive => !RemovalDate.HasValue || DateTime.Now <= RemovalDate.Value;
}