7.—(1) The amount of levy to be assessed in respect of site employees for each leviable establishment is—
1.2% of (A + B – C)
where
A is the total emoluments of all persons who are site employees employed by the employer at or from the leviable establishment under a contract of service or apprenticeship during the relevant base period received in connection with their employment at or from the leviable establishment;
B is the sum of all payments (including payments for the incidental use of tools) made or owed by the employer under labour-only agreements for services rendered during the relevant base period to the employer by site employees for the leviable establishment;
C is the sum of all payments (including payments for the incidental use of tools) received by or owed to the employer from any other employers in the engineering construction industry under labour-only agreements for services rendered during the relevant base period by the employer, or on the employer’s behalf, by site employees for the leviable establishment.
(2) The amount of levy to be assessed in respect of off site employees for each leviable establishment is—
the relevant percentage of (D + E – F)
where
the relevant percentage is—
(a)0.20% in respect of the first levy period;
(b)0.27% in respect of the second levy period; and
(c)0.33% in respect of the third levy period;
D is the total emoluments of all persons who are off site employees employed by the employer at or from the leviable establishment under a contract of service or apprenticeship during the relevant base period received in connection with their employment at or from the leviable establishment;
E is the sum of all payments (including payments for the incidental use of tools) made or owed by the employer under labour-only agreements for services rendered to the employer during the relevant base period by off site employees for the leviable establishment;
F is the sum of all payments (including payments for the incidental use of tools) received by or owed to the employer from any other employers in the engineering construction industry under labour-only agreements for services rendered during the relevant base period by the employer, or on the employer’s behalf, by off site employees for the leviable establishment.
(3) In paragraphs (1) and (2) the following are to be excluded from all calculations—
(a)all payments made to company directors remunerated solely by fees;
(b)all payments under labour-only agreements to the extent that any payment is—
(i)in respect of the provision of materials;
(ii)otherwise not in respect of the provision of services.
(4) If an amount calculated as a result of either paragraph (1) or (2) is negative, that amount is treated as zero for the purposes of paragraph (5).
(5) The amount of levy to be assessed in respect of each leviable establishment is the aggregate of the amounts calculated as a result of paragraphs (1) and (2).
(6) Where a leviable establishment ceases to be engaged in the engineering construction industry during a levy period, the amount of levy imposed in respect of the leviable establishment for that period is to be in the same proportion to the amount that would otherwise be due under this article as the number of days between the commencement of the levy period and the date of the cessation of engagement (both dates inclusive) bears to the number of days in the levy period.