Pt. 2A inserted (6.4.2016) by Small Business, Enterprise and Employment Act 2015 (c. 26), ss. 150(2), 164(1) (with s. 150(8)); S.I. 2016/321, reg. 3(d)
In the case of a financial award, the unpaid amount on any day means the amount outstanding immediately before that day in respect of—
the initial amount of the financial award (see subsection (2)), and
interest payable in respect of the financial award by virtue of section 14.
The initial amount of a financial award is—
in a case to which section 16 applies, the monetary award within the meaning of that section (see section 17(3)), together with any costs sum, and
in any other case, the sum or sums of money ordered to be paid (including any costs sum).
An amount in respect of a financial award is not to be regarded as outstanding—
when the worker could make an application for an order for a costs sum in relation to—
proceedings on the claim to which the financial award relates,
proceedings on a relevant appeal,
when the worker has made such an application but the application has not been withdrawn or finally determined,
when the employer or worker could appeal against—
the decision on the claim to which it relates,
a decision to make, or not to make, a financial award (including any costs sum) on the claim,
the amount of any such award, or
any decision made on an appeal within sub-paragraphs (i) to (iii) or this sub-paragraph,
but has not done so, or
when the employer or worker has made such an appeal but the appeal has not been withdrawn or finally determined.