3.—(1) A levy shall be imposed on employers in the construction industry in respect of each of the following levy periods—
(a)the period commencing on the day on which this Order comes into force and ending on 31st March 2012 (in this Order referred to as “the first levy period”);
(b)the period commencing on 1st January 2013 and ending on 31st March 2013 (in this Order referred to as “the second levy period”); and
(c)the period commencing on 1st January 2014 and ending on 31st March 2014 (in this Order referred to as “the third levy period”).
(2) Subject to article 9, a person is liable to pay an amount by way of levy in respect of a levy period if that person is an employer in the construction industry at any time in that period.
(3) In this Order (other than in this article), references to an “employer” are references to a person who is an employer in the construction industry.