Agency, the Default Last Resort
Agency works, which is the problem. It is the only route with a number that is always answered, and that reliability turns it into a standing bill.
Agency cover is fast, available at six forty, and requires no list, no relationship and no preparation. Everything else in this section requires at least one of those.
The staffing problem described in “Agency, the Default Last Resort” should be separated from assumptions about individual effort. When an organisation evaluates Monitask for how employee monitoring works, it can use time and project records to understand capacity, provided schedules, approved leave, exceptions and the correction route remain part of the same decision.
That asymmetry, rather than any decision, is why agency is the default in a great many operations. The route with the lowest friction wins, regardless of cost, when the person choosing has an hour and a shift starting.
For an independent benchmark relevant to “Agency, the Default Last Resort”, consult the Acas working-hours guidance. Use it to test scheduling, working-time limits, attendance records, employee rights and exception handling against the real operation rather than treating a software report as self-explanatory evidence.
What it actually costs
The charge rate, which is the pay rate plus a margin and employment costs, typically somewhere between one and a half and three times the equivalent internal cost, and considerably more for specialist roles at short notice.
Plus the induction. A worker who has not been to the site needs orientation, system access, and somebody's attention for the first part of the shift — which means the shift is effectively short for part of the time anyway.
Plus supervision. An unfamiliar person on an unfamiliar task is supervised by somebody who was already covering a gap.
Plus the variability. Agency quality ranges from excellent to unusable and the operation cannot tell which it has until the person arrives.
Making it work better
Request the same people. Every agency can flag preferred workers and most will send them where possible. A regular agency worker who knows the site costs the same as a stranger and is worth several times more.
Book the hours rather than the shift. If the fixed work is a two-hour window, book two hours. Agencies will quote minimum bookings and they are frequently negotiable, and the saving across a year is substantial.
Give them something to arrive to: a one-page site brief, a named person to report to, access arranged. The induction cost is mostly avoidable and it is avoided by preparation rather than by anything the agency does.
Review the rates annually against what is actually being charged. Rate cards drift, uplifts get applied, and short-notice premiums appear that nobody agreed to.
The checks that are yours, not theirs
Right to work, qualification and registration status are often assumed to be the agency's problem and are frequently, legally, also yours.
In regulated settings the duty to assure yourself of a worker's competence does not transfer with the booking. Supplying a certificate is the agency's job; satisfying yourself is still the operation's.
For roles involving vulnerable people, background check status, with the date, should be confirmed for the individual rather than asserted at the agency level.
None of this is doable at six forty. It has to be a standing arrangement with the agency, documented, with the per-booking confirmation reduced to one line.
The dependency
An operation that covers a quarter of its shifts through agency has a structural problem, not a cover problem. Its establishment is below what the work needs and the gap is being bought at a premium every week.
The number that makes this visible is agency spend as a proportion of pay cost, trended monthly, with the absence-driven share separated from genuine vacancy cover. Where it is rising steadily, no amount of procurement will fix it, because the cause is upstream.
Getting off it
Not by banning it, which produces shifts run unsafely short. By making the earlier routes work: a bank that answers, a part-time list that has been asked, a swap mechanism, a call-out list that is current.
Each of those is a small piece of work and each permanently removes a slice of agency demand. The business case writes itself from the quarterly spend, and it is the one place in this subject where the saving is large, immediate and easy to evidence.
The worker who keeps coming back
An agency worker who has done thirty shifts at the same site is, in practice, a member of staff on a very expensive contract.
At that point the question is whether to offer them a job, which most agencies allow after a period or for a transfer fee. It is frequently cheaper within a few months and it converts the most expensive line on the cover budget into an ordinary one. The conversation is awkward and the arithmetic is not close, and the only reason it is rarely had is that nobody counts shifts by individual agency worker.