Recruiting one welder is a process. Recruiting three hundred workers across fifteen trades for a project start date is logistics. Large mobilisations from India to Saudi Arabia fail for predictable reasons: visa blocks issued for the wrong profession mix, medical centres that cannot process the volume in one week, camps not ready when the first batch lands, or a trade test that rejects half the candidates in one critical trade. This guide sets out how to plan a mobilisation of a hundred or more workers so the crew arrives in usable groups when the site needs them.
Start From the Site Histogram
The project's manpower histogram — how many of each trade are needed each week — is the starting point. Turn it into a mobilisation schedule: which trades must arrive first (usually general labour, steel fixers and carpenters for structural work, or scaffolders and riggers for industrial work), which follow, and which can wait for later phases such as MEP and finishing. Do not mobilise MEP technicians to a site where the structure will not be ready for three months.
Visa Block and Profession Mix
The visa block requested on Qiwa should mirror the histogram's profession mix, with a margin for substitution. Visas are tied to professions; a block with too many helpers and too few electricians cannot be fixed quickly. Check SVP-listed professions, Nitaqat headroom and skill-tier salaries at the time of the request, as described in our block visa guide.
Indian-Side Capacity
Each step in India has a throughput limit:
- Sourcing and trade testing — test centres can assess only so many candidates a day per trade; welding coupons and equipment tests are the slowest
- SVP — slots in busy trades can be limited, so pre-certified pools matter
- Wafid medicals — centres have daily capacity, and a few unfit results are normal, so recruit a margin
- Stamping — the Saudi mission and Enjaz processing work in batches
- Emigration clearance — normally quick on eMigrate if documents are in order
- Flights — group bookings on direct routes to Riyadh, Jeddah or Dammam fill quickly in peak travel seasons
The slowest stage sets the pace. For most mobilisations it is trade testing for skilled roles or the medical stage for large volumes.
Batch Size
We generally recommend batches of 20 to 50 workers. Smaller batches waste flight and coordination effort; larger ones overload camp reception and site induction. A mobilisation of 300 typically runs as six to ten batches over four to eight weeks, with the first batch arriving within the standard 1–25 day window from a ready block.
Selection Margin
Not every selected candidate travels: some fail medicals, some withdraw for family reasons, some have passport problems. Selecting 10 to 15 percent above the required number in each trade, with a reserve list, protects the schedule. Tell reserve candidates honestly where they stand.
Camp Readiness
Before the first batch flies, confirm licensed beds, bedding, catering, water, cooling and transport for that batch and the next one. The camp is often the true critical path on large Saudi projects, especially remote ones. Our labour camp standards guide lists what auditors check.
Arrival and Induction
Arrival day should be choreographed: airport reception, transfer to camp, a meal and rest. Over the following days, collect biometrics and complete iqama issuance, open wage accounts, authenticate contracts on Qiwa and deliver site safety induction. A dedicated HR and safety team for the mobilisation keeps this moving; asking project staff to do it alongside their day jobs creates backlogs. The iqama guide explains the deadlines.
Communication Plan
Workers selected weeks before travel want to know when they will fly. Keep them informed through the agency, or the best of them will take other offers. On site, assign each batch to a supervisor who speaks their language.
Summer and Ramadan
Avoid large first batches arriving into peak summer for heavy outdoor work without an acclimatisation plan, as covered in our heat-stress guide. During Ramadan, reduced hours for fasting workers slow the ramp-up and should be built into the histogram.
Governance
A weekly call between your project HR, the agency and the camp operator, backed by a shared tracker showing each worker's trade, test result, medical result, visa status, flight and arrival, prevents surprises. Exceptions — a failed medical, a missing passport page — should be visible within a day, not discovered at the airport.
Replacements During Mobilisation
Agree in advance how replacements for failed medicals or no-shows are handled and how quickly. Our service agreement sets replacement terms in writing so nobody negotiates them in the middle of a mobilisation.
After Mobilisation
Once the crew is on site, the work shifts to retention: paying correctly, keeping accommodation standards and addressing grievances early. Read our guide to preventing absconding, and see the construction workers page for typical crew structures.
Frequently Asked Questions
What batch size works best for a large Saudi mobilisation?
Batches of 20 to 50 workers usually balance flight efficiency against camp reception and induction capacity. A crew of 300 typically arrives in six to ten batches over four to eight weeks.
What usually delays a large mobilisation?
The slowest stage sets the pace — typically trade testing for skilled roles, medical capacity for large volumes, or camp beds not being ready on the Saudi side.
