Contractor / Subcontractor Onboarding

Subcontractor engagement from prequalification through to site mobilisation

Human Resources
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Lead Time

230.0h

Cycle Time

10.0h

Wait Time

220.0h

PCE

3.9%

Stages

8

Bottleneck

Scope & Rate Negotiation

Value-Add vs Non-Value-Add

Value-Add (VA)

An activity is value-add if it meets all three criteria:

  • The customer is willing to pay for it
  • It transforms the product or service
  • It is done right the first time

Examples: Assembly, diagnosis, treatment, coding, machining, testing

Non-Value-Add (NVA)

Activities that consume time or resources but don't add value from the customer's perspective:

  • Waiting — queues, approvals, batching delays
  • Transport — moving materials or information
  • Motion — unnecessary movement of people
  • Rework — correcting defects or errors
  • Over-processing — doing more than required

Note: Some NVA is necessary (compliance, safety). Target unnecessary NVA first.

Process Timeline

Value-Add vs Non-Value-Add

Bottleneck Analysis

Stage Efficiency

# Stage Cycle (h) Wait (h) VA Resource Defect % Efficiency
1 Prequalification Submission 2.0 0.0 VA Contractor 20.0% 100.0%
2 Document Review (Insurance, Licences, SWMS) 1.5 48.0 VA Compliance Officer 25.0% 3.0%
3 Prequalification Approval 0.5 24.0 VA Procurement Manager 5.0% 2.0%
4 Scope & Rate Negotiation 2.0 72.0 VA Contract Manager 10.0% 2.7%
5 Purchase Order / Subcontract Issued 1.0 24.0 VA Procurement 8.0% 4.0%
6 Site Induction & Safety Briefing 2.0 48.0 VA Safety Officer 5.0% 4.0%
7 Access Card & System Setup 0.5 4.0 NVA Admin 8.0% 11.1%
8 Mobilisation to Work Area 0.5 0.0 NVA Site Supervisor 2.0% 100.0%