(1) If no period for the employment has been fixed by the parties, either party may give notice to the other party of his intention to rescind the contract for the future at any time.
(2) In the case of paragraph (1), the notice of intention to rescind for the future becomes effective after one month has elapsed from the date of receipt by the other party of such notice.
(3) If remuneration has been fixed on a set and regular periodical basis, the rescission of the contract for the future shall be deemed to be effective after one full period has elapsed from the date of completion of the current period during which the other party received the notice of intention to rescind the contract for the future.