Paragraph 16
Subject to sub-paragraph (2) an authorisation shall remain in force—
in the case of a first authorisation for a full-time post, for two years from the date of its commencement;
in the case of a first authorisation for a part-time post or a subsequent authorisation (whether for a full-time or part-time post), for such period as may be specified in the authorisation.
An authorisation shall lapse—
if the overseas trained teacher ceases to be employed by the local education authority which was the recommending body or with whose consent the recommending body acted pursuant to paragraph 13 or
in the case of an overseas trained teacher who was recommended for an authorisation by the governing body or a grant-maintained school or a special school not maintained by a local education authority ceases to be employed in the post of which particulars are given in the authorisation.
For the purpose of this paragraph “date of commencement” means the date specified in the authorisation as its date of commencement.