STRABAG SE Wiener Börse STR ATX Sep 2025 + PORR AG POS FY24 EUR 6.2 bn + Swietelsky + HABAU + Hochtief Austria, Koralmtunnel commercial Nov 2025 + Brenner Base Tunnel BBT.
Austrian civil mega-project prime workforce against STRABAG SE (Wiener Börse ISIN AT000000STR1 ticker STR; added to ATX benchmark index 22 September 2025; year-end 2025 market cap ~EUR 9.6 bn; HQ Donau-City-Strasse 9 1220 Vienna), PORR AG (Wiener Börse AT0000609607 ticker POS; 2024 revenue EUR 6.20 bn; order backlog EUR 8.5 bn at year-end 2024; civil-engineering infrastructure 58.5% of net sales — bridges + tunnels + railways + motorways + power), Swietelsky AG (Linz HQ privately held; active in tunnel + railway construction; partner in Semmering Base Tunnel main lot), HABAU GROUP (Perg Upper Austria privately held; HABAU INFRA pool active since 2024; 1st place "construction" category Austria's Top Innovative Companies 2025), and HOCHTIEF Infrastructure Austria GmbH (Vienna; ACS/Hochtief AG subsidiary — active on Koralmbahn Granitzal tunnel chain + Semmering Base Tunnel Lot 1.1 + Vienna U-Bahn U2/U5) — Koralmbahn/Koralmtunnel released for commercial traffic 1 November 2025; full Koralmbahn high-performance line operations 14 December 2025 (Graz-Klagenfurt ~40 min) + Brenner Base Tunnel BBT (64 km Innsbruck-Fortezza; Lot H33 Tulfes-Pfons Strabag/Salini-Impregilo EUR ~380 m; Lot H53 Pfons-Brenner PORR + Hinteregger + Condotte + Itinera EUR ~966 m "largest tunnelling lot in Austrian history") + Semmering Base Tunnel (27.3 km; final excavation breakthrough 28 November 2024; SBT 2.1 Fröschnitzgraben Implenia+Swietelsky JV EUR ~623 m; SBT 1.1 Gloggnitz Implenia+HOCHTIEF+Thyssen Schachtbau EUR 457 m; programme total escalation EUR 3.1 bn → ~EUR 4.2 bn; operational entry 2030). AVRAG (Arbeitsvertragsrechts-Anpassungsgesetz) + LSD-BG (Lohn- und Sozialdumping-Bekämpfungsgesetz in force 1 Jan 2017 + amended 1 Sep 2021; max fine EUR 20,000 per worker) + ZKO-3 / ZKO-4 Meldung to BMF Zentrale Koordinationsstelle + BUAK (Bauarbeiter-Urlaubs- und Abfertigungskasse) + KV Bauindustrie / Baugewerbe wage table effective 1 May 2025 +2.7% / 39h working week + Finanzpolizei + Arbeitsinspektion joint enforcement.
Request Technical BriefingRegulator exposure profile
- AVRAG + LSD-BG max EUR 20k28%
- ZKO-3 + BUAK 2-week notify26%
- KV Bauindustrie 1 May 2025 +2.7%24%
- Finanzpolizei + Arbeitsinspektion22%
Austrian civil-mega prime cascade exposure axes.
Austrian civil-mega prime matrix against STRABAG / PORR / Swietelsky / HABAU / HOCHTIEF Austria × AVRAG + LSD-BG + ZKO + BUAK + KV Bauindustrie + Finanzpolizei + Arbeitsinspektion.
| STRABAG SE | PORR AG | Swietelsky AG | HABAU GROUP | HOCHTIEF AT | |
|---|---|---|---|---|---|
| ZKO-3 / ZKO-4 Meldung | covered | covered | covered | covered | covered |
| LSD-BG (max EUR 20k/worker) | covered | covered | covered | covered | covered |
| BUAK + KV Bauindustrie | covered | covered | covered | covered | covered |
| Finanzpolizei + Arbeitsinspektion | covered | covered | covered | covered | covered |
- In-scope
- Conditional
- Tightening
- Out of scope
BMF Finanzpolizei April 2026 Europe-wide priority check: 546 offences across 285 sites (268 LSD-BG cases). ZKO data forwarded to BUAK for construction.
Named projects in this jurisdiction
- Koralmbahn / Koralmtunnel (ÖBB-Infrastruktur AG counterparty; Koralmtunnel released for commercial traffic 1 November 2025; full Koralmbahn high-performance line operations commenced with December 2025 timetable change on 14 December 2025; Graz-Klagenfurt travel time ~40 minutes; Granitzal tunnel chain section HOCHTIEF + Implenia JV EUR 140 m 50/50; Rechnungshof published "Projekt Koralmbahn" review in 2025) ÖBB-Infrastruktur AG 2025
- Brenner Base Tunnel (BBT SE counterparty Innsbruck-Fortezza 64 km): Lot H33 Tulfes-Pfons Strabag/Salini-Impregilo JV summer 2014 ~EUR 380 m; Lot H53 Pfons-Brenner PORR Bau + Hinteregger + Condotte + Itinera consortium ~EUR 966 m "largest tunnelling lot in Austrian history" — PORR release; Lot H41 Gola del Sill-Pfons Webuild + Implenia EUR 651 m Italian side context BBT SE + PORR + STRABAG + Webuild 2014
- Semmering Base Tunnel (27.3 km ÖBB-Infrastruktur counterparty; final excavation breakthrough 28 November 2024; SBT 2.1 Fröschnitzgraben Implenia + Swietelsky JV ~EUR 623 m 2014; SBT 1.1 Gloggnitz Implenia + HOCHTIEF + Thyssen Schachtbau EUR 457 m; programme total escalation EUR 3.1 bn → ~EUR 4.2 bn early-2025 estimate; operational entry 2030 delayed from 2026) ÖBB-Infrastruktur AG 2024
- STRABAG SE (Wiener Börse AT000000STR1 STR; ATX 22 Sep 2025; cap ~EUR 9.6 bn) + PORR AG (POS; FY24 revenue EUR 6.20 bn) + Swietelsky AG (Linz HQ private) + HABAU GROUP (Perg HQ private) + HOCHTIEF Infrastructure Austria GmbH (ACS/Hochtief AG sub) STRABAG + PORR + Swietelsky + HABAU + HOCHTIEF AT
Austrian civil-mega prime: STRABAG SE (STR ATX Sep 2025), PORR AG (POS FY24 EUR 6.2 bn), Swietelsky AG, HABAU GROUP, HOCHTIEF AT. Koralmtunnel commercial Nov 2025 + BBT H53 Pfons-Brenner EUR ~966 m + Semmering breakthrough Nov 2024 (EUR 4.2 bn programme). AVRAG + LSD-BG + ZKO + BUAK + KV Bauindustrie govern.
01. Pre-pricing — KV Bauindustrie + BUAK
KV Bauindustrie wage floor (1 May 2025 +2.7% / 39h working week) per worker. BUAK Bauarbeiter-Urlaubs- und Abfertigungskasse leave-supplement obligation per posted construction worker. Foreign employer BUAK notification at least 2 weeks before deployment.
02. ZKO-3 + A1 + LSD-BG pre-deployment
ZKO-3 / ZKO-4 Meldung to BMF Zentrale Koordinationsstelle mandatory per posted worker. A1 portable document. LSD-BG max EUR 20,000 fine per worker for non-compliance.
03. BUAK + Finanzpolizei + Arbeitsinspektion onboarding
BUAK registration + monthly contributions. Finanzpolizei + Arbeitsinspektion joint construction-site inspections. Bundesinnung Bau (WKO) sectoral employer compliance.
04. BMF + BUAK-defensible evidence pack
Minimum pack: Austria-bank-traceable remuneration, German-language contract, A1 receipt, ZKO-3 receipt, BUAK registration + monthly contribution receipts, KV Bauindustrie wage-floor reconciliation per worker.
05. India and Gulf sourcing corridors — the Austria civil-prime pathway
Indian Larsen & Toubro Heavy Civil + Gulf Saudi Binladin / Six Construct pools route through ZKO + LSD-BG + BUAK + KV Bauindustrie audit-grade chain-of-custody against STRABAG, PORR, Swietelsky, HABAU, or HOCHTIEF AT scopes.