In if not agreed. Employment is defined as a fixed price or wage rate, but employment will see whether proper and correct that contractors must follow the direction of employment.
In case not agreed. The employer will determine the rate of wages or prices fixed by the employer to see that right and wrong, which the contractor must follow the orders of the employer.
In addition, agreed The employer determines hired or fixed price, but the employer will see appropriate and accurate which contractors must obey orders of the employer