Hi,
sorry for late reply, unfortunately the only way is to get labels from DB; labels are stored in table "#__jsn_fields" column "params".
You can use this code to retrieve Label:
// PUT OPTIONS IN AN ARRAY
$db = JFactory::getDbo( ) ;
$query = $db->getQuery( true ) ;
$query->select('params')->from( '#__jsn_fields' )->where( 'alias = "employment"' ) ;
$db->setQuery( $query ) ;
$field_params = json_decode( $db->loadResult( ) ) ;
$field_options = explode( "\n",$field_params->select_options ) ;
$field_options_array = array () ;
foreach( $field_options as $opt ) {
$opt_tmp = explode( '|', $opt );
$field_options_array[ $opt_tmp[ 0 ] ] = $opt_tmp[ 1 ];
}
// SHOW LABEL
echo $field_options_array[ $user->employment ] ;