煩請translate contract內容

1a. your appointment shalll start on December 1,2009, shall end on July 31,2009, and shall be subject to termination at any time during this period on two weeks notice given by either side.

1b. notwithstanding the provisions of clause 1a above, you may give in writing less than the required period of notice of cessation of employment on payment to the company of a sum of money equal to one half of the gross salary which would have accrued to you during the period from the actual date of cessation of employment to the date on which your employment would have ceased had the period notice specified in clause 1a been given.

請問係咪話要辭工就兩個星期通知, 如果唔夠兩個星期就要補錢呀 ?
thank you