If you sell construction project management software, BIM coordination tools, or field management apps to general contractors, subcontractors, or project owners — your customers operate under OSHA 29 CFR Part 1926, Davis-Bacon certified payroll requirements, AIA contract notice deadlines, and LEED documentation obligations.
Every one of those compliance cycles creates a window for your platform to deliver proactive value, reduce customer churn, and win procurement reviews.
Here are 5 production-ready n8n automations built specifically for ConstructionTech SaaS vendors, with complete import-ready workflow JSON.
Why self-host n8n? Federal construction contracts under FAR 52.204-21 impose Controlled Unclassified Information (CUI) basic handling requirements — project specifications, floor plans, and subcontractor data cannot flow through cloud iPaaS. Davis-Bacon WH-347 certified payroll data is worker wage PII that becomes an FLSA audit discovery target in cloud environments. OSHA 29 CFR §1904.39 requires 8-hour telephonic notification for fatal accidents — if your automation layer goes down, you missed a mandatory deadline. OSHA §1926.16 makes the prime contractor responsible for subcontractor coordination model staleness. Self-hosted n8n keeps sensitive construction data in your customer's enclave and gives you Git-versioned workflow JSON as an audit-ready evidence trail.
Workflow 1: New Construction Customer Onboarding & Compliance Drip
Trigger: Webhook (CRM new customer event)
Segments customers by role and flags applicable compliance obligations at Day 0, Day 3, and Day 7.
{
"name": "ConstructionTech Customer Compliance Onboarding Drip",
"nodes": [
{
"name": "New Customer Webhook",
"type": "n8n-nodes-base.webhook",
"parameters": {
"path": "construction-customer-onboarding",
"responseMode": "lastNode"
}
},
{
"name": "Classify Tier & Flags",
"type": "n8n-nodes-base.code",
"parameters": {
"jsCode": "\nconst customer = $json;\nconst tier = customer.company_type || 'GENERAL_CONTRACTOR';\n// GENERAL_CONTRACTOR | SUBCONTRACTOR | OWNER_DEVELOPER | CM_GC | SPECIALTY_TRADE\nconst flags = [];\nif (customer.federal_contract) flags.push('FEDERAL_CONTRACT');\nif (customer.davis_bacon_required) flags.push('DAVIS_BACON_ACT');\nif (customer.leed_certified || customer.leed_target) flags.push('LEED_CERTIFIED');\nif (customer.prevailing_wage_state) flags.push('PREVAILING_WAGE_REQUIRED');\nif (customer.public_contract) flags.push('PUBLIC_CONTRACT');\nif (customer.dbe_certified) flags.push('DBE_CERTIFIED');\nif (customer.aia_contracts) flags.push('AIA_CONTRACT');\nflags.push('OSHA_CONSTRUCTION_1926'); // universal\nreturn [{json: {...customer, tier, compliance_flags: flags, onboarding_start: new Date().toISOString()}}];\n"
}
},
{
"name": "Log to Postgres",
"type": "n8n-nodes-base.postgres",
"parameters": {
"operation": "executeQuery",
"query": "INSERT INTO customer_compliance_profiles (customer_id, tier, compliance_flags, created_at) VALUES ('{{ $json.customer_id }}', '{{ $json.tier }}', '{{ $json.compliance_flags.join(\",\") }}', NOW()) ON CONFLICT (customer_id) DO UPDATE SET compliance_flags = EXCLUDED.compliance_flags, updated_at = NOW()"
}
},
{
"name": "Day 0 Welcome Email",
"type": "n8n-nodes-base.gmail",
"parameters": {
"to": "={{ $json.contact_email }}",
"subject": "Welcome to [Your Platform] \u2014 Your Compliance Checklist",
"message": "Hi {{ $json.contact_name }},\n\nWelcome aboard. Based on your profile ({{ $json.tier }}), here's your initial compliance checklist:\n\n{{ $json.compliance_flags.includes('FEDERAL_CONTRACT') ? '\u2022 Federal contract: FAR 52.204-21 CUI handling requirements apply\\n\u2022 Davis-Bacon WH-347 certified payroll weekly submission\\n' : '' }}{{ $json.compliance_flags.includes('LEED_CERTIFIED') ? '\u2022 LEED documentation: credit audit trail required\\n' : '' }}\u2022 OSHA 29 CFR Part 1926: safety incident reporting obligations apply to all construction projects\n\nYour dedicated CSM will reach out within 24 hours.\n\nBest,\n[Your Platform] Team"
}
},
{
"name": "Day 3 Integration Setup",
"type": "n8n-nodes-base.wait",
"parameters": {
"amount": 3,
"unit": "days"
}
},
{
"name": "Day 3 Email",
"type": "n8n-nodes-base.gmail",
"parameters": {
"to": "={{ $json.contact_email }}",
"subject": "Set up your OSHA incident webhook \u2014 3-minute guide",
"message": "Hi {{ $json.contact_name }},\n\nDay 3 checklist:\n\n1. Connect your OSHA incident reporting webhook (8-hour telephonic notification for fatal accidents \u2014 \u00a71904.39)\n2. Import your Davis-Bacon prevailing wage determinations\n3. Set up your BIM model sync endpoint\n\nNeed help? Reply to this email.\n\nBest,\n[Your Platform] Team"
}
},
{
"name": "Day 7 Compliance Review",
"type": "n8n-nodes-base.wait",
"parameters": {
"amount": 4,
"unit": "days"
}
},
{
"name": "Day 7 Email",
"type": "n8n-nodes-base.gmail",
"parameters": {
"to": "={{ $json.contact_email }}",
"subject": "Week 1 complete \u2014 compliance audit trail ready",
"message": "Hi {{ $json.contact_name }},\n\nYour compliance profile is live. All workflow executions are logged with timestamps \u2014 your OSHA recordable injury reports, Davis-Bacon payroll submissions, and AIA contract notice deadlines are now tracked automatically.\n\nFor federal contracts: your n8n workflow JSON is Git-versioned, satisfying FAR 52.204-21 audit trail requirements.\n\nQuestions? Reply here.\n\n[Your Platform] Team"
}
},
{
"name": "Respond OK",
"type": "n8n-nodes-base.respondToWebhook",
"parameters": {
"responseCode": 200,
"responseBody": "{\"status\":\"ok\"}"
}
}
],
"connections": {}
}
Workflow 2: OSHA 29 CFR Part 1926 Safety Incident Pipeline
Trigger: Webhook (field app incident report)
Classifies construction safety incidents by OSHA severity and routes alerts with citation-specific deadlines.
{
"name": "OSHA Construction Safety Incident Pipeline",
"nodes": [
{
"name": "Safety Incident Webhook",
"type": "n8n-nodes-base.webhook",
"parameters": {
"path": "osha-safety-incident",
"responseMode": "lastNode"
}
},
{
"name": "Dedup 30min",
"type": "n8n-nodes-base.code",
"parameters": {
"jsCode": "\nconst state = $getWorkflowStaticData('global');\nconst key = $json.incident_id;\nconst now = Date.now();\nif (state[key] && now - state[key] < 30 * 60 * 1000) {\n return [];\n}\nstate[key] = now;\nreturn [$input.item];\n"
}
},
{
"name": "Classify Incident",
"type": "n8n-nodes-base.code",
"parameters": {
"jsCode": "\nconst type = $json.incident_type;\nconst typeMap = {\n 'FATAL_ACCIDENT': {severity: 'CRITICAL', citation: 'OSHA 29 CFR \u00a71904.39', deadline: '8h telephonic notification to OSHA', color: '#FF0000'},\n 'OSHA_RECORDABLE_INJURY': {severity: 'CRITICAL', citation: 'OSHA 29 CFR \u00a71904.7', deadline: '7-day OSHA 300 log entry required', color: '#FF4444'},\n 'EXCAVATION_COLLAPSE': {severity: 'CRITICAL', citation: 'OSHA 29 CFR \u00a71926.651', deadline: 'Immediate stop-work + OSHA notification', color: '#FF4444'},\n 'ELECTRICAL_HAZARD': {severity: 'CRITICAL', citation: 'OSHA 29 CFR \u00a71926.416', deadline: 'Immediate stop-work + lockout/tagout', color: '#FF4444'},\n 'LOST_TIME_INJURY': {severity: 'HIGH', citation: 'OSHA 29 CFR \u00a71904.7', deadline: 'OSHA 300 log entry within 7 days', color: '#FF8800'},\n 'FALL_FROM_HEIGHT': {severity: 'HIGH', citation: 'OSHA 29 CFR \u00a71926.502', deadline: 'Incident report + fall protection review', color: '#FF8800'},\n 'CONFINED_SPACE_ENTRY': {severity: 'HIGH', citation: 'OSHA 29 CFR \u00a71926.1203', deadline: 'Atmospheric test + permit required', color: '#FF8800'},\n 'EQUIPMENT_FAILURE': {severity: 'HIGH', citation: 'OSHA 29 CFR \u00a71926.302', deadline: 'Equipment removed from service', color: '#FF8800'},\n 'NEAR_MISS': {severity: 'MEDIUM', citation: 'OSHA 29 CFR \u00a71926.20(a)', deadline: 'Safety investigation within 24h', color: '#FFAA00'}\n};\nconst info = typeMap[type] || {severity: 'MEDIUM', citation: 'OSHA 29 CFR Part 1926', deadline: 'Review required', color: '#FFAA00'};\nreturn [{json: {...$json, ...info, ts: new Date().toISOString()}}];\n"
}
},
{
"name": "Route by Severity",
"type": "n8n-nodes-base.switch",
"parameters": {
"rules": [
{
"value1": "={{ $json.severity }}",
"operation": "equal",
"value2": "CRITICAL"
},
{
"value1": "={{ $json.severity }}",
"operation": "equal",
"value2": "HIGH"
}
]
}
},
{
"name": "Slack Critical",
"type": "n8n-nodes-base.slack",
"parameters": {
"channel": "#safety-incidents-critical",
"text": "\ud83d\udea8 CRITICAL OSHA INCIDENT \u2014 {{ $json.incident_type }}\nProject: {{ $json.project_name }} | Worker: {{ $json.worker_name }}\nCitation: {{ $json.citation }}\nDeadline: {{ $json.deadline }}\nCustomer: {{ $json.customer_name }}\nIncident ID: {{ $json.incident_id }}"
}
},
{
"name": "Email Safety Director",
"type": "n8n-nodes-base.gmail",
"parameters": {
"to": "safety-director@yourcompany.com",
"subject": "CRITICAL OSHA {{ $json.incident_type }} \u2014 {{ $json.project_name }}",
"message": "OSHA critical incident detected at {{ $json.project_name }}.\n\nType: {{ $json.incident_type }}\nCitation: {{ $json.citation }}\nRequired action: {{ $json.deadline }}\nCustomer: {{ $json.customer_name }}\nWorker: {{ $json.worker_name }}\nTimestamp: {{ $json.ts }}\nIncident ID: {{ $json.incident_id }}\n\nThis record is logged in Postgres for OSHA \u00a71904 retention (5 years)."
}
},
{
"name": "Log to Postgres",
"type": "n8n-nodes-base.postgres",
"parameters": {
"operation": "executeQuery",
"query": "INSERT INTO osha_incidents (incident_id, customer_id, project_name, incident_type, severity, citation, deadline, worker_name, ts, notified_at) VALUES ('{{ $json.incident_id }}', '{{ $json.customer_id }}', '{{ $json.project_name }}', '{{ $json.incident_type }}', '{{ $json.severity }}', '{{ $json.citation }}', '{{ $json.deadline }}', '{{ $json.worker_name }}', '{{ $json.ts }}', NOW()) ON CONFLICT (incident_id) DO NOTHING"
}
},
{
"name": "Respond ACK",
"type": "n8n-nodes-base.respondToWebhook",
"parameters": {
"responseCode": 200,
"responseBody": "{\"status\":\"logged\"}"
}
}
],
"connections": {}
}
Key: OSHA §1904.39 requires 8-hour telephonic notification to OSHA for fatalities and 24-hour for hospitalizations. If your automation platform goes down during a fatal incident, your customer missed a mandatory federal deadline. Self-hosted n8n eliminates that single point of failure.
Workflow 3: Davis-Bacon & Prevailing Wage Compliance Deadline Tracker
Trigger: Schedule — weekdays 8 AM
Tracks 12 critical construction compliance deadline types with OSHA and Davis-Bacon citations.
{
"name": "Davis-Bacon & Construction Compliance Deadline Tracker",
"nodes": [
{
"name": "Weekday 8AM Schedule",
"type": "n8n-nodes-base.scheduleTrigger",
"parameters": {
"rule": {
"interval": [
{
"field": "cronExpression",
"expression": "0 8 * * 1-5"
}
]
}
}
},
{
"name": "Read Deadlines Sheet",
"type": "n8n-nodes-base.googleSheets",
"parameters": {
"operation": "read",
"sheetId": "YOUR_SHEET_ID",
"range": "Deadlines!A2:L500"
}
},
{
"name": "Classify Urgency",
"type": "n8n-nodes-base.code",
"parameters": {
"jsCode": "\nconst today = new Date();\nconst items = [];\nfor (const row of $input.all()) {\n const r = row.json;\n const due = new Date(r.due_date);\n const daysLeft = Math.floor((due - today) / 86400000);\n let urgency = 'OK';\n if (daysLeft < 0) urgency = 'OVERDUE';\n else if (daysLeft <= 7) urgency = 'CRITICAL';\n else if (daysLeft <= 21) urgency = 'URGENT';\n else if (daysLeft <= 45) urgency = 'WARNING';\n else if (daysLeft <= 90) urgency = 'NOTICE';\n if (urgency === 'OK') continue;\n const today_str = today.toISOString().slice(0, 10);\n if (r.alert_sent_date === today_str) continue;\n items.push({json: {...r, urgency, daysLeft, today_str}});\n}\nreturn items;\n"
}
},
{
"name": "Route Deadline Type",
"type": "n8n-nodes-base.switch",
"parameters": {
"rules": [
{
"value1": "={{ $json.deadline_type }}",
"operation": "equal",
"value2": "CERTIFIED_PAYROLL_WH347_WEEKLY"
},
{
"value1": "={{ $json.deadline_type }}",
"operation": "equal",
"value2": "OSHA_TRAINING_RENEWAL_10HR"
},
{
"value1": "={{ $json.deadline_type }}",
"operation": "equal",
"value2": "OSHA_TRAINING_RENEWAL_30HR"
},
{
"value1": "={{ $json.deadline_type }}",
"operation": "equal",
"value2": "AIA_A201_CHANGE_ORDER_RESPONSE"
}
]
}
},
{
"name": "Slack Alert",
"type": "n8n-nodes-base.slack",
"parameters": {
"channel": "#compliance-deadlines",
"text": "{{ $json.urgency }}: {{ $json.deadline_type }} \u2014 {{ $json.customer_name }}\nDue: {{ $json.due_date }} ({{ $json.daysLeft }}d)\nCitation: {{ $json.citation }}\nOwner: {{ $json.owner_email }}"
}
},
{
"name": "Email Owner",
"type": "n8n-nodes-base.gmail",
"parameters": {
"to": "={{ $json.owner_email }}",
"subject": "[{{ $json.urgency }}] {{ $json.deadline_type }} due {{ $json.due_date }} \u2014 {{ $json.customer_name }}",
"message": "Compliance deadline: {{ $json.deadline_type }}\nCustomer: {{ $json.customer_name }}\nDue: {{ $json.due_date }} ({{ $json.daysLeft }} days)\nCitation: {{ $json.citation }}\nAction required: {{ $json.action_required }}"
}
},
{
"name": "Mark Alert Sent",
"type": "n8n-nodes-base.googleSheets",
"parameters": {
"operation": "update",
"sheetId": "YOUR_SHEET_ID",
"range": "Deadlines",
"data": {
"values": [
[
"={{ $json.today_str }}"
]
]
},
"options": {
"locationDefine": "specifyRange",
"rangeDefinition": "={{ $json.sheet_row }}"
}
}
}
],
"connections": {}
}
12 deadline types tracked:
| Deadline Type | Citation | Penalty |
|---|---|---|
| Certified Payroll WH-347 (weekly) | 40 USC §276a-7 | Contract debarment |
| Prevailing Wage Determination Annual Review | 29 CFR Part 5 | Back pay liability |
| Davis-Bacon Apprentice Ratio Review | 29 CFR §5.5(a)(4) | Contract default |
| AIA A201 Change Order Response | AIA §7.3.1 | Waiver of claim |
| Conditional Lien Waiver (progress payment) | State lien law | Lien rights lost |
| Performance Bond Renewal | Miller Act 40 USC §3131 | Contract breach |
| Payment Bond Renewal | Miller Act 40 USC §3133 | Subcontractor claims |
| Contractor License Renewal | State licensing board | Stop-work order |
| Insurance COI Expiry | AIA A201 §11.1 | Contract default |
| OSHA 10-Hour Training Renewal | OSHA §1926.503 | $15,625/violation |
| OSHA 30-Hour Training Renewal | OSHA §1926.503 | $15,625/violation |
| LEED Documentation Submission | USGBC certification | Credit loss |
Workflow 4: BIM Model & Field Data Sync Health Monitor
Trigger: Schedule — every 10 minutes
Monitors BIM coordination model freshness and field data sync endpoints. Stale BIM models create OSHA §1926.16 prime contractor liability.
{
"name": "BIM Model & Field Data Sync Health Monitor",
"nodes": [
{
"name": "10min Schedule",
"type": "n8n-nodes-base.scheduleTrigger",
"parameters": {
"rule": {
"interval": [
{
"field": "cronExpression",
"expression": "*/10 * * * *"
}
]
}
}
},
{
"name": "Read Endpoints",
"type": "n8n-nodes-base.googleSheets",
"parameters": {
"operation": "read",
"sheetId": "YOUR_SHEET_ID",
"range": "BIM_Endpoints!A2:G100"
}
},
{
"name": "Ping Endpoints",
"type": "n8n-nodes-base.httpRequest",
"parameters": {
"url": "={{ $json.endpoint_url }}",
"method": "GET",
"continueOnFail": true,
"timeout": 10000
}
},
{
"name": "Evaluate State",
"type": "n8n-nodes-base.code",
"parameters": {
"jsCode": "\nconst state = $getWorkflowStaticData('global');\nconst results = [];\nfor (const item of $input.all()) {\n const r = item.json;\n const endpoint_id = r.endpoint_id;\n const statusCode = r.statusCode || 0;\n const lastSync = r.last_sync_ts ? new Date(r.last_sync_ts) : null;\n const staleMs = lastSync ? Date.now() - lastSync.getTime() : Infinity;\n let status = 'OK';\n if (statusCode !== 200) status = 'DOWN';\n else if (staleMs > 60 * 60 * 1000) status = 'STALE'; // >1h\n else if (statusCode >= 400) status = 'AUTH_ERROR';\n const prevStatus = state[endpoint_id] || 'OK';\n state[endpoint_id] = status;\n if (status !== 'OK' && status !== prevStatus) {\n const note = status === 'STALE' ?\n 'OSHA \u00a71926.16: Prime contractor responsible for subcontractor coordination model freshness. Stale BIM data = clash detection gap.' :\n '';\n results.push({json: {...r, status, staleMs, note, ts: new Date().toISOString()}});\n }\n}\nreturn results.length ? results : [{\"json\": {\"skip\": true}}];\n"
}
},
{
"name": "Filter Alerts",
"type": "n8n-nodes-base.if",
"parameters": {
"conditions": {
"boolean": [
{
"value1": "={{ $json.skip }}",
"value2": true,
"operation": "notEqual"
}
]
}
}
},
{
"name": "Slack Alert",
"type": "n8n-nodes-base.slack",
"parameters": {
"channel": "#platform-bim-ops",
"text": "BIM SYNC {{ $json.status }} \u2014 {{ $json.endpoint_name }}\nCustomer: {{ $json.customer_name }}\nType: {{ $json.endpoint_type }}\nLast sync: {{ $json.last_sync_ts }}\n{{ $json.note ? '\u26a0\ufe0f ' + $json.note : '' }}\nTimestamp: {{ $json.ts }}"
}
},
{
"name": "Log to Postgres",
"type": "n8n-nodes-base.postgres",
"parameters": {
"operation": "executeQuery",
"query": "INSERT INTO bim_sync_incidents (endpoint_id, customer_id, status, stale_ms, note, ts) VALUES ('{{ $json.endpoint_id }}', '{{ $json.customer_id }}', '{{ $json.status }}', {{ $json.staleMs }}, '{{ $json.note }}', '{{ $json.ts }}') ON CONFLICT DO NOTHING"
}
}
],
"connections": {}
}
Workflow 5: Weekly ConstructionTech Platform KPI Dashboard
Trigger: Schedule — Monday 8 AM
Rolls up safety incidents, Davis-Bacon deadlines, and platform health for executive review.
{
"name": "Weekly ConstructionTech Platform KPI Dashboard",
"nodes": [
{
"name": "Monday 8AM",
"type": "n8n-nodes-base.scheduleTrigger",
"parameters": {
"rule": {
"interval": [
{
"field": "cronExpression",
"expression": "0 8 * * 1"
}
]
}
}
},
{
"name": "Query Platform Metrics",
"type": "n8n-nodes-base.postgres",
"parameters": {
"operation": "executeQuery",
"query": "SELECT COUNT(DISTINCT customer_id) AS active_customers, COUNT(DISTINCT CASE WHEN tier='GENERAL_CONTRACTOR' THEN customer_id END) AS gc_count, COUNT(DISTINCT CASE WHEN tier='SUBCONTRACTOR' THEN customer_id END) AS sub_count, SUM(mrr_usd) AS total_mrr FROM customer_compliance_profiles WHERE status='ACTIVE'"
}
},
{
"name": "Query Safety Incidents",
"type": "n8n-nodes-base.postgres",
"parameters": {
"operation": "executeQuery",
"query": "SELECT COUNT(*) AS osha_incidents_7d, COUNT(CASE WHEN severity='CRITICAL' THEN 1 END) AS critical_incidents, COUNT(CASE WHEN severity='CRITICAL' AND resolved_at IS NULL THEN 1 END) AS critical_open, COUNT(CASE WHEN incident_type='FATAL_ACCIDENT' THEN 1 END) AS fatalities_7d FROM osha_incidents WHERE ts >= NOW() - INTERVAL '7 days'"
}
},
{
"name": "Query Deadlines",
"type": "n8n-nodes-base.postgres",
"parameters": {
"operation": "executeQuery",
"query": "SELECT COUNT(*) AS deadlines_overdue, COUNT(CASE WHEN deadline_type LIKE 'DAVIS_BACON%' THEN 1 END) AS davis_bacon_overdue, COUNT(CASE WHEN deadline_type LIKE 'OSHA%' THEN 1 END) AS osha_training_overdue FROM compliance_deadlines WHERE urgency='OVERDUE'"
}
},
{
"name": "Build KPI Report",
"type": "n8n-nodes-base.code",
"parameters": {
"jsCode": "\nconst prev = $getWorkflowStaticData('global');\nconst m = $('Query Platform Metrics').first().json;\nconst s = $('Query Safety Incidents').first().json;\nconst d = $('Query Deadlines').first().json;\nconst mrrWoW = prev.last_mrr ? ((m.total_mrr - prev.last_mrr) / prev.last_mrr * 100).toFixed(1) : '\u2014';\nprev.last_mrr = m.total_mrr;\nconst flags = [];\nif (parseInt(s.critical_open) > 0) flags.push(`[OSHA CRITICAL: ${s.critical_open} OPEN]`);\nif (parseInt(s.fatalities_7d) > 0) flags.push(`[FATAL ACCIDENT: ${s.fatalities_7d}]`);\nif (parseInt(d.davis_bacon_overdue) > 0) flags.push(`[DAVIS-BACON OVERDUE: ${d.davis_bacon_overdue}]`);\nconst subject = `${flags.length ? flags.join(' ') + ' ' : ''}ConstructionTech Weekly KPI \u2014 ${new Date().toISOString().slice(0,10)}`;\nconst html = `\n<h2>ConstructionTech Platform KPI \u2014 Week of ${new Date().toISOString().slice(0,10)}</h2>\n<table border=\"1\" cellpadding=\"6\" style=\"border-collapse:collapse\">\n<tr><th>Metric</th><th>Value</th><th>WoW</th></tr>\n<tr><td>Active Customers</td><td>${m.active_customers}</td><td>\u2014</td></tr>\n<tr><td>GC / Subcontractor</td><td>${m.gc_count} / ${m.sub_count}</td><td>\u2014</td></tr>\n<tr><td>MRR</td><td>$${m.total_mrr?.toLocaleString()}</td><td>${mrrWoW}%</td></tr>\n<tr style=\"background:${parseInt(s.critical_incidents)>0?'#ffe0e0':''}\"><td>OSHA Incidents (7d)</td><td>${s.osha_incidents_7d}</td><td>\u2014</td></tr>\n<tr style=\"background:${parseInt(s.critical_open)>0?'#ff9999':''}\"><td>Critical Incidents Open</td><td>${s.critical_open}</td><td>\u2014</td></tr>\n<tr style=\"background:${parseInt(d.davis_bacon_overdue)>0?'#fff3cd':''}\"><td>Davis-Bacon Overdue</td><td>${d.davis_bacon_overdue}</td><td>\u2014</td></tr>\n<tr><td>OSHA Training Overdue</td><td>${d.osha_training_overdue}</td><td>\u2014</td></tr>\n</table>\n${flags.length ? '<p style=\"color:red\"><strong>Action required: ' + flags.join(', ') + '</strong></p>' : ''}\n`;\nreturn [{json: {subject, html}}];\n"
}
},
{
"name": "Send Email",
"type": "n8n-nodes-base.gmail",
"parameters": {
"to": "ceo@yourcompany.com",
"cc": "safety-director@yourcompany.com",
"bcc": "ciso@yourcompany.com",
"subject": "={{ $json.subject }}",
"message": "={{ $json.html }}",
"options": {
"bodyContentType": "html"
}
}
},
{
"name": "Slack Summary",
"type": "n8n-nodes-base.slack",
"parameters": {
"channel": "#exec-construction-kpis",
"text": "ConstructionTech Weekly KPI sent. {{ $json.subject }}"
}
}
],
"connections": {}
}
Why ConstructionTech SaaS vendors should self-host n8n
| Risk | Cloud iPaaS Exposure | Self-Hosted n8n |
|---|---|---|
| OSHA §1904.39 8h fatal accident deadline | Platform outage = missed federal deadline | In-enclave, no external dependency |
| Davis-Bacon WH-347 certified payroll | Worker wage PII in cloud = FLSA discovery target | Stays in customer's enclave |
| AIA A201 §7.3.1 change order notices | Cloud delay = waiver of claim rights | Execution log is audit evidence |
| FAR 52.204-21 CUI handling | Project specs/floor plans cannot exit enclave | Git-versioned JSON = CUI audit trail |
| OSHA §1926.16 BIM coordination | Stale cloud sync = prime contractor liability | 10-min monitor with citation-specific alerts |
| LEED credit documentation | No chain-of-custody for credit data | Workflow execution log = USGBC evidence |
Get the complete template bundle
These 5 workflows are part of the FlowKit n8n automation template library — production-ready, import-ready JSON covering 15+ industries and 50+ compliance frameworks.
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Next in this series: CivicTech/Smart City SaaS, EdTech SaaS (FERPA/COPPA), MarTech SaaS (CCPA/GDPR consent).
Questions about adapting these for your stack? Drop them in the comments.
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