TCM0124120 | Eligibility - remunerative work (determining): Gaps in employment (Info)
From HM Revenue & Customs · Tax Credits Manual
If a person has a gap in their employment - for example, they are between two jobs - they will be treated as being in qualifying remunerative work, provided they have been engaged in qualifying remunerative work within the past seven days.
Note: Where the four-week run-on is granted, this extends to 28 days from the date the first job ends.