Changing staffing supplier safely means keeping the workers while replacing the agency. The people on your lines are your operation's memory — they know the site, the product and the pace — and a switch that loses them costs far more than the supplier ever did. Handle the labour first, the contract second, and never start a transfer on a Monday of a peak week.
If you are reading this because tomorrow morning is short, skip to the next section. The rest will keep.
Six things, in this order. Changing supplier is next week's problem; tonight is about the shift.
If you want us in the mix for tomorrow, the sales enquiry form below reaches our team directly rather than a general inbox — including in the evening, when the branches are shut. Tell us the site, the shift and the number, and somebody will come back to you.
“Bookings are covered” and “people will arrive” are different statements, and the gap between them is where most supplier failure lives. A booking that has been allocated but never accepted by a worker is not cover, and a supplier who does not separate the two cannot tell you which you have.
Ask three specific questions:
The last question is the one that matters. A supplier who cannot produce booked against attended by week, by site, is not measuring the thing they are being paid to deliver. That is not an aggressive question and it should not produce a defensive answer — it is the basic record of the service.
If the answers are vague, ask for them in writing with a deadline. A supplier who will not put their own delivery figures in an email is telling you something useful.
If you are using three agencies and still have gaps, changing one of them may not help. Multi-agency supply is often introduced to create competition and ends up creating ambiguity instead.
The diagnostic is whether anybody owns the total. Three things tend to be true when nobody does:
Before replacing a supplier, check whether the booking process is the problem: how requirements are communicated, how late changes are handled, how far ahead bookings are confirmed. A single well-run supplier with a clear process usually outperforms three suppliers with an unclear one — but only if the process is fixed as part of the change.
Ask every candidate supplier for the same seven things, and compare the answers rather than the presentations.
Accept answers all seven, and it is fair to hold us to that. Booked against attended comes from the records that run the shifts rather than from a report assembled for the meeting. The difference between an allocated shift and an accepted one is built into how we book, so we can tell you which you have. Our licence number and the name it is held in are on the compliance page. And clients see bookings, live attendance and timesheets themselves rather than asking us to send them.
We work across the Midlands from branches in Leicester, Coventry and Tamworth, which matters more than it sounds when a supplier is being replaced. Taking a site over quickly depends on having people who already live near it and have already worked that shift pattern — not on how fast an agency can recruit strangers.
This is the part that determines whether the change works, and it is usually the part nobody plans.
The workers on your site are not the property of the outgoing agency. They are individuals who will decide, within a day or two of hearing about the change, whether to register with the incoming supplier, go to a different site, or stay with the agency they know. The good ones decide fastest, because they have options.
So identify the people you want to keep before anything is announced, and make sure the incoming supplier's first action is to register them — quickly, on site if possible, with continuity of pay rate and shift pattern. Uncertainty about either is what sends a reliable worker elsewhere. Say plainly that you want them to stay; it is remarkable how rarely anyone does.
Where an onsite managed service is being replaced rather than a supply arrangement, TUPE may apply to the agency's own on-site staff — the coordinators and account team, not the temporary workers. Establish early whether it applies, because the consultation obligations and timescales sit on the critical path of the change rather than alongside it. This is a legal question rather than a commercial one, and it is worth taking your own advice on it at the start rather than relying on the view of either agency, incoming or outgoing.
How long a change takes is set by the same thing that governs any large intake: how many people the incoming supplier can get registered, compliant and inducted per day, and how quickly your own site can receive them. Headcount matters less than either. A like-for-like takeover where most of the workers stay and register with the new supplier runs over a small number of weeks. One where the workers do not follow is a recruitment exercise, and it takes as long as recruitment takes.
So ask a candidate supplier for their registration and induction throughput per day rather than for a date. A supplier who offers you a date without first asking about your induction capacity has not worked out what the constraint is.
Everything above is what to do once it has already gone wrong. This is what makes the next time survivable, and none of it takes long to set up:
The last two are the ones that prevent rather than mitigate. A weekly figure nobody looks at is not a control, and an escalation route that runs through a generic mailbox at nine in the evening is not one either.
Get the confirmed number in writing from your supplier now — how many people, by name, due at what time. Decide the minimum crew that keeps the critical line running. Call a second supplier this evening rather than in the morning, because same-day lead time is measured in hours and the useful ones are tonight. Ask your own team about overtime before going to the market, since people already inducted and on site are faster and safer cover. And write down what was booked, what was promised and what arrived, while it is fresh.
Separate allocated from accepted. A shift assigned to a worker who has not agreed to it is not cover, and many suppliers count it as a fill. Ask how many of tomorrow's shifts have been accepted by a named worker, how many of those workers have worked your site before, and what the difference between booked and attended was on your site in each of the last four weeks. A supplier who cannot produce that last figure is not measuring the thing they are being paid for.
Booked against attended by week for a comparable site, with the definition behind it. How they distinguish an allocated shift from an accepted one. Compliance evidence including the licence number and the name it is held in. Their induction throughput per day, which determines how fast they can actually take over. What you will be able to see yourself without asking. And a reference from a client who changed supplier to them, because the transition is what you are buying.
Identify the people you want to keep before anything is announced, and make registering them the incoming supplier's first action — fast, on site if possible, with continuity of pay rate and shift pattern. Workers are not transferred with a contract; they decide within a day or two whether to follow, and the reliable ones decide fastest because they have options. Telling them directly that you want them to stay is both effective and rare.
Check whether anyone owns the total. If each supplier fills its own allocation, nobody is accountable for the shortfall between them. If the same workers are registered with all three, you are competing with yourself for a pool you already had. And if each books separately, nobody can see why the same shift keeps failing. Before replacing a supplier, look at how requirements are communicated and how late changes are handled — one well-run supplier usually beats three with an unclear process.
A second supplier who has already worked your site and been through your induction, rather than a name on a list. A written minimum crew per line, so the early-morning decision is a lookup rather than a judgement call. A standing overtime understanding with your own team, agreed in advance rather than during the crisis. A booking cutoff you both hold to, with an agreed point at which a shortfall is escalated rather than quietly absorbed. Booked against attended reported weekly as routine, because most supplier failures appear in that figure two or three weeks before they appear on the floor. And one named person on each side with authority to commit, and a mobile number rather than a shared inbox.
The minimum crew that keeps the critical line moving and what can be stood down. A named decision-maker on each side and a time by which the position is confirmed rather than discussed. A second supplier contacted in the evening for a morning shift. Transport and start times confirmed for anyone newly booked. And a written record of what was requested, promised and delivered, because that record is what the supplier conversation afterwards depends on.
Speak with our directors about safe supplier transition, retaining your reliable line workers, and audited attendance figures.
Talk to us about a change of supplier