Laravel-Training-Project/app/Models/employee.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class employee extends Model
{
    use HasFactory;
    public function office():belongsTo
    {
        return $this->belongsTo(office::class);
    }
}