# One worker, several sites: keeping construction placements straight Construction demand is project-based and workers move between sites. How an agency can keep one worker record with a clear assignment history, so permits and employer details stay accurate. By Worker Vault · Published 12 October 2026 · 4 min read URL: https://workervault.com/blog/construction-placements-multiple-sites-records **Key points** - Keep one record per worker, and record each site assignment as dated history on it. - Separate facts about the worker from facts about the assignment. - Review assignments and document dates together when a project ends or a worker moves. - Keep demand per project so fulfilment can be read project by project. Construction work is organised around projects. Demand rises when a project starts, falls when it ends and shifts between sites as phases complete. For a recruitment agency, that means the same worker may be assigned to different sites, sometimes under different employer clients, within a single permit period. The records have to follow. If the worker's file is organised by site, a transfer creates a second file, and the history is split. If the worker's file is organised by worker, with assignments as history, the facts stay in one place. This article is about record-keeping practice. Rules about transfers, permits and site eligibility vary by country and pass type and come from the authority. Use their guidance, and use this routine to keep your records ready. ## Separate the worker from the assignment Two kinds of fact live in a construction file: - **Facts about the worker:** identity, passport, permit, medical, skills and cost history. These stay with the person. - **Facts about the assignment:** employer client, site or project, role, start and end date, supervisor contact. These change. Keep the first kind on the worker record and the second as dated entries underneath it. When a worker moves, close the old assignment with an end date and open a new one. Never overwrite the old one. ## Keep demand per project Employers in construction often order per project, in waves. Record each project's demand as its own entry, or [demand line](https://workervault.com/blog/foreign-worker-recruitment-stages-demand-to-deployment), with headcount, roles and timing, so fulfilment can be read project by project. A single running total across all projects hides which one is short. When a project ends, close its demand, and review which workers are free to be placed on another demand. That list is where your next fulfilment comes from. ## Review documents at every move A move is a natural checkpoint. At each assignment change, check: - Are the worker's [permit and passport dates](https://workervault.com/blog/foreign-worker-permit-expiry-tracking-routine) still comfortable for the new assignment period? - Does the new employer client need any document that the previous one did not? - Are there open items on the worker's record that should be cleared before the move? Fixing these at the move is cheaper than finding them at the next audit or the next renewal. ## Make assignment history readable A good assignment history answers four questions quickly: 1. Where is this worker now, and since when? 2. Where have they been, and for how long? 3. Who at the employer client is the contact? 4. Is there anything outstanding on the record? If your team has to open several files to answer these, the structure is wrong. ## Report by employer client and by project Clients will ask for their own workers and sometimes for a single project. Make sure you can filter by employer client and by project from the same records. If you can, the monthly status report almost writes itself. See [what to put in a monthly status report](https://workervault.com/blog/employer-client-report-foreign-worker-agency). ## When a project ends The end of a project is the moment records go stale. Workers are released, supervisors move on and the site contact changes. Close the assignments with their end dates the same week, record where each worker goes next, and update any open items. Then review the group as a whole. Which workers have permits that run well beyond the project, and which are close to expiry? Which have no next assignment? The answers tell you what to offer to other demands, and what to plan for if there is nothing to offer. ## A short checklist for each move - Close the old assignment with an end date. - Open the new assignment with employer client, site, role and start date. - Check permit and passport dates against the new period. - Clear or hand over any open items. - Tell the new site contact who looks after the worker. ## Where Worker Vault fits Worker Vault keeps [one record per worker](https://workervault.com/solutions/worker-records), with employment records for the employer client and documents, expiry dates and custody history on the worker. [Demands and demand lines](https://workervault.com/solutions/recruitment) track what each employer ordered and what has been deployed, and an employer contact can be invited with read-only access to their own client's permitted information. Worker Vault does not have construction-specific modules and does not decide whether a transfer is permitted. It keeps the records that make a transfer easy to prepare for. See the [construction page](https://workervault.com/industries/construction) for how agencies in this sector use it, and [Book a Demo](https://workervault.com/book-a-demo) to see it with your own workers and sites. This post provides general information only. It is compiled from information publicly available on the web and is not an official source or legal or professional advice. Rules and requirements change over time, so check the facts with the relevant official authority before acting. Worker Vault accepts no responsibility for how this content is used.