Urlaubs- und Lohnausgleichskasse der Bauwirtschaft (ULAK)
Zusatzversorgungskasse des Baugewerbes AG (ZVK)

Wettinerstraße 7
D-65189 Wiesbaden
Telefon +49 (0) 611 707-0
Telefax +49 (0) 611 707-1880

Service and security for the construction industry

SOKA-BAU supports vocational training in the construction industry.

SOKA-BAU is a modern service provider and competent pension specialist for the German construction industry and has pro­­­vided a variety of services over the past 50 years tailored to the parti­cular circum­stanc­­es of businesses and employees in the con­­­­struction industry. The responsible or­­ga­­ni­­zations of SOKA-BAU are labour agree­­ment parties in the construction industry.

Work conditions in the construction in­­dus­­try are characterized by lack of sta­­tion­­ary production facilities, strong weath­­er de­­pend­­­ency, regular non-productive time and frequent workplace changes. This makes the industry susceptible to salary losses, low pensions and disadvantages in vacation entitlement.

SOKA-BAU offers a series of services, se­­cured by labour agreements, to reduce the disadvantages of these industry-spe­­cific work conditions:

• SOKA-BAU manages a vacation process that is different from those under legal reg­­ulations, which is also valid for Eu­­ro­­pean construction companies that are ac­­tive in Germany.

• SOKA-BAU guarantees interplant, em­­­ploy­­­­er-financed supplementary retirement benefits to em­­ployees in the construction in­­dus­­try.

• SOKA-BAU makes an essential financial contribution to industry-wide unified, allocation-financed vocational education in the construction industry.




The SOKA-BAU office building, which has been recognized with several awards, on Wettinerstraße.

Additional industry-specific services SOKA-BAU offers include voluntary supplemen­­tal employer-financed retirement benefits (Bau­­Rente), as well as industry-tailored so­­­­lu­tions for insolvency insurance for work time ac­­counts. SOKA-BAU also offers IT and print­­ing services to insurers, pension plans and other financial service providers.



SOKA-BAU is the owner of more than 10,000 residences and over 100 com­­mer­­­cial property units across all important re­­gions in Germany. SOKA-BAU rents more than 2,100 residential properties in the Wies­­baden and Mainz areas alone. In new construction projects, SOKA-BAU has made a name for itself through in­­novative and sus­­­­tainable construction. At the multiple award-winning of­­fice build­­ing in Wet­tiner­stra­­ße (due to its very good eco-bal­­ance, among other things), the ad­­min­­is­­tration of the ci­­ty of Wiesba­­den is one of the largest ren­­ters. With these serv­­ice offerings, SOKA-BAU today works for around 70,000 German and European com­­panies with more than 620,000 em­­ploy­­ees and for around 425,000 em­­ploy­ees in retirement.


In 2008, SOKA-BAU pro­­vided services to employers and em­­ployees in the amount of over 2.1 bil­­lion euros. Active nationwide, SOKA-BAU has regional roots and recognizes it­­self as part of the city of Wiesbaden. With around 1,300 em­­­ployees, it is one of the large employers and is also a successful and depend­­able training organization.



1  Parties to collective agreements: Zentralverband des Deutschen Baugewerbes, Hauptverband der Deutschen Bauindustrie, Industriegewerkschaft Bauen-Agrar-Umwelt



Urlaubs- und Lohnausgleichskasse
der Bauwirtschaft (ULAK)
des Baugewerbes AG (ZVK)

Executive Board:
Manfred Purps

Karl-Heinz Sahl


Year of foundation:
ULAK: 1949
ZVK: 1957

ULAK: 1,6 billion euros
ZVK: 3,2 billion euros

approximately 1,300



  • Protection of vacation entitlement
  • Financing of internal and interplant   vocational training
  • Interplant employer-financed pension assistance
  • Individual retirement benefits for employees and employers
  • Protection of accrued retirement benefits/ time account management
  • Minimum wage control
  • Real estate services
  • IT and printing services

Founder Organizations:

  • Zentralverband des Deutschen Baugewerbes
  • Hauptverband der Deutschen Bauindustrie
  • Industriegewerkschaft Bauen-Agrar-Umwelt

Wettinerstraße 7
D-65189 Wiesbaden
Telefon +49 (0) 611 707-0
Telefax +49 (0) 611 707-1880




Company contributions:

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Education of the highest quality standard
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Author contributions:

The Colts and the Borussia Mönchengladbach Legend
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An attractive investment location for global players and medium-sized companies
Halle (Saale) – consolidated under one umbrella