Here is an example of code you would place in functions.php to accomplish this with the Posts 2 Posts plugin:

// Create business/employee relationship
add_action( 'p2p_init', 'register_p2p_connections' );
function register_p2p_connections(){
    p2p_register_connection_type(
        array(
             'name'           => 'business_to_employee',
             'from'           => 'business',
             'to'             => 'employee',
             'title'          => array(
                 'from' => 'Employees',
                 'to'   => 'Employer'
             ),
             'admin_column'   => 'to',
             'admin_dropdown' => 'to',
             'fields'         => array(
                 'title' => array(
                     'title'   => 'Position',
                     'default' => ''
    ))));
}

// Auto-publish posts created via P2P box are drafts (they default as drafts).
add_filter( 'p2p_new_post_args', 'p2p_published_by_default', 10, 2 );
function p2p_published_by_default( $args, $ctype ) {
    $args['post_status'] = 'publish';
    return $args;
}

To list the employees when viewing a business post, in the single-business.php template, you add some code like this:

// Find connected employee
$connected = new WP_Query( array(
  'connected_type' => 'business_to_employee',
  'connected_items' => get_queried_object(),
  'nopaging' => true,
) );
// Display connected employees
if ( $connected->have_posts() ) : ?>
    <h3>Employees:</h3>
    <ul>
    <?php while ( $connected->have_posts() ) : $connected->the_post(); ?>
        <li><?php 
        the_title();
        $position = p2p_get_meta( $post->p2p_id, 'position', true ); 
        echo ( empty($position) ? '' : ", $position" );
        ?></li>
    <?php endwhile; ?>
    </ul><?php 
endif;
// Restore original (business) post data
wp_reset_postdata();