is it a good practice to load the model in the constructor function??

[eluser]zoreli[/eluser]
I would like to know...can I load the model in my constructor function instead of loading it for each function within that controller?

Lets say that I have 5 functions that use same model. Instad of loadin the same model in all 5 functions, should I load the controller in the construcor function like this?

Code:

if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class BackOfficeUsers extends MY_Controller
{

    // constructor function
    public function __construct()
    {
        parent::__construct();
        $this->load->model('backOfficeUsersModel'); // load it here??
    } // end of constructor function

Is this good practice or no??