In paragraph 1(1) of Schedule 1 to the Earnings Factor Regulations (rules for the ascertainment of earnings factors)—
(a) for the definitions of “Class 1 contributions” and “contracted-out contributions”, there shall be substituted the following definitions—
“Class 1 contributions” means primary Class 1 contributions paid or treated as paid on so much of a person’s earnings as do not exceed the current upper earnings limit or the prescribed equivalent if he is paid otherwise than weekly;
“contracted-out contributions” means primary Class 1 contributions paid or treated as paid on so much of a person’s earnings in respect of any contracted-out employment as exceed the current lower earnings limit but do not exceed the current upper earnings limit or the prescribed equivalents if he is paid otherwise than weekly;
(b) in the definition of “the standard level”, after the words “lower earnings limit for” there shall be inserted the word “primary”.