Why Screening
Fails.
Architecturally incapable. Not poorly executed.
68% Deviation rate
20 min Average screening
3-5× Recovery cost multiplier
PLACEMENT OUTCOMES
100 Workers Deployed
Conventional Screening 68 deviate from expectations
BSS-Screened Deployment <4 deviate from expectations
STRUCTURAL IMPOSSIBILITIES Not poorly executed.
Not poorly executed.
Architecturally incapable.
01
Rational actors will misrepresent when the reward exceeds the cost.
Adversarial Incentives Wage differential 2-3×. Coaching is cheap. Preparation materials are free. Any method relying on self-report is compromised by design.
02
Interview-to-site performance correlation approaches zero for coached candidates.
Self-Report Bankrupt A 30-minute verbal exchange cannot sample the behavioural space required to assess trade competence. The channel is maximally gameable.
03
Credentials verify historical achievement. Competence is dynamic.
Wrong Verification Target A valid welding certificate proves a test was passed at some point. It says nothing about current capability, performance under pressure, or coordination with other trades.
04
20 minutes cannot sample the variance that 6-8 hours captures.
Insufficient Window To assess multiple independent dimensions with sufficient confidence to detect coached presentation requires a minimum 6-8 hour structured observation window.
COST OF FAILURE
Your Exposure
Conventional Screening
82 workers deviate
€1.2M replacement exposure
€4.3M total recovery exposure
BSS-Screened
5 workers deviate
€75K replacement exposure
€263K total recovery exposure
Annual exposure reduced by €4.0M
Based on industry average placement costs (€15K/worker). Conventional: 68% deviation. BSS: <4%. Recovery multiplier: 3.5×. Does not include safety or regulatory exposure.
THE ALTERNATIVE
What Changes
8-16 wk 2-4 wk
Mobilisation timeline 68% <4%
Deviation rate 20 min 6-8 hrs
Assessment depth 0 10
Dimensions profiled — "The industry treats screening failure as a quality problem — hire better recruiters, ask better questions. It is not a quality problem. It is an architecture problem. You cannot solve it within the conventional screening paradigm."
Bayswater Transflow Engineering