Part 02
Multiple jobholding: what household surveys count as second work
Official labour statistics often report the share of employed people who hold more than one job. In US Current Population Survey (CPS) publications, multiple jobholders are typically defined as people who, during the survey reference week, had a main job and also worked at another job or business, or who worked for multiple employers. The Bureau of Labor Statistics (BLS) publishes tables and occasional spotlight articles that track the multiple-jobholding rate over time and by demographic groups.
That definition sounds simple, but the measurement object is narrow. The CPS asks about activity in a specific week. Short-lived gigs that fall outside the reference week can be missed. Informal cash work that respondents do not classify as a “job” may also go unreported. Conversely, people with two formal payroll jobs are relatively easy to capture when both appear in the weekly activity report.
What the series is good for
Multiple-jobholding rates are useful for seeing whether second-job activity is rising or falling in the population covered by the household survey, and for comparing subgroups when sample sizes allow. They are not a direct measure of “side income” as a monetary concept: the CPS multiple-jobholder flag is about whether a second job existed in the reference week, not about how much that job paid or whether it was mediated by an app.
International comparisons require even more caution. National statistical offices differ in how they define main and secondary jobs, how they treat unpaid family work, and how they sample. Harmonised frameworks from the International Labour Organization help, but country series still embed local questionnaire wording and coverage rules.
Limits when discussing platform work
Platform-mediated tasks often sit awkwardly inside classic job categories. A person whose only additional earnings come from occasional microtasks may not report that activity as a second job. A person with a primary payroll job and a regular ride-hail schedule may report both. The same underlying behaviour can therefore look different in survey data depending on how respondents map it onto the instrument.
Researchers who want to study digitally mediated earnings often combine household surveys with administrative tax records, bank transactions or platform scrapes. Each source answers a different question. Tax forms may reveal income categories without revealing hours. Bank deposits may reveal flows without revealing job titles. Household surveys may reveal job counts without revealing platform identity.
Reading the rate without overclaiming
A rising multiple-jobholding rate does not, by itself, prove that “side hustles” expanded in a colloquial sense, nor that living standards improved or worsened. It indicates that more people in the survey’s employed population reported a second job in the reference week under the survey’s definitions. Motives, hours and pay require other questions.
Cue Ledger files the multiple-jobholding concept because it is one of the few widely published official series that explicitly counts people with more than one job. That makes it a useful contrast to papers that measure earnings on a single platform. The series is complementary evidence about how second work is counted in household instruments — not a scoreboard for complementary income strategies.