In many European Union countries, construction projects are carried out at a very advanced technological level. They therefore require specialist knowledge and skills from construction workers. In the context of work related to underground structures and soil stabilization, one of the most important specialists is a backfiller. The role of a backfiller is invaluable in infrastructure projects, such as the construction of tunnels, shafts or large foundations.

Also read: Construction painter’s work in various EU countries

Are you looking for a job? Check: Employees. Contact us and we will present you with an offer tailored to your needs and requirements! We specialize in recruiting construction workers such as bricklayers, pavers, plasterers, carpenters, locksmiths, fitters and general construction workers.

Table of contents:

Who is a backfiller?

A backfiller is responsible for filling empty spaces in underground workings, tunnels, shafts, or other construction structures. Their work is aimed at stabilizing the ground and preventing the surface from sinking. Backfillers are an integral part of teams working on the construction of communication tunnels, mines, ventilation shafts, as well as large buildings requiring deep foundations. Their work is essential for the safety of the entire structure.

Backfiller – scope of duties

Preparation of backfilling material

Backfillers are responsible for preparing the appropriate backfilling materials. Depending on the project and geological requirements, these may be bulk materials such as sand, gravel, cement mixes, or specialist chemical materials. These materials must be properly selected and prepared to ensure the appropriate stability and load-bearing capacity of the structure.

Filling voids

However, after the preparation, the backfiller’s main task is to fill voids in underground structures. In the case of tunnels, shafts or other excavations, there is a risk of voids forming, which can lead to the ground collapsing. The backfiller fills these voids with prepared material, using manual or mechanical techniques. This work requires precision and experience to ensure even distribution of the material and avoid future structural problems.

Quality control of backfill

Furthermore, backfillers are also responsible for quality control of the backfill. They must monitor the backfilling process to ensure that the materials are properly compacted and distributed. This monitoring may include strength testing, moisture content testing, and monitoring the stability of the soil using specialized measuring equipment.

Key skills of a backfiller


A backfiller must have extensive knowledge of the various backfilling materials, their properties, and application methods. Depending on the geological conditions and the specifics of the project, selecting the right backfilling material can be critical to the success of the project. Knowledge of mechanical and chemical properties is essential to assessing the suitability of the materials for the specific conditions.

It is also worth mentioning that backfillers often use sophisticated equipment to mix and apply backfilling materials. This may include pumps, mixers, grouts, and drills. Therefore, it is important to know how to operate this equipment and understand how it works. In addition, working with heavy equipment requires adherence to rigorous safety standards.

Knowledge of geotechnics, which is the science of studying soils and rocks and their behavior under the influence of construction loads, is also essential. Knowledge of the basics of geotechnics allows for a better understanding of ground stability problems and the taking of appropriate preventive measures.

Qualifications and training for backfillers

In EU countries, backfillers must have appropriate certificates and authorizations. They are a confirmation of their qualifications and skills. Depending on the country, these may be certificates related to the operation of heavy equipment, authorizations to work at heights, or certificates in the field of occupational safety. For example, in Germany, certificates compliant with VDI (Verein Deutscher Ingenieure) or TÜV (Technischer Überwachungsverein) standards are required.

Moreover, backfillers must constantly develop their technical and practical skills to keep up to date with new technologies and work methods. Technical training includes learning how to use new equipment, learning new backfill materials and methods of their application.

An absolute priority is also compliance with occupational health and safety regulations. In EU countries, construction workers, including backfillers, must undergo appropriate OHS training. Such training includes evacuation procedures, first aid, as well as knowledge of the regulations for working at heights and with hazardous materials.

Summary

As we have already mentioned, the role of a backfiller in modern construction projects in EU countries is invaluable. The stability and safety of many underground structures, tunnels, shafts or foundations depend on their work. Backfillers must have extensive technical knowledge, analytical skills, and attention to detail to meet the challenges of modern construction projects.

Our company Migconstruction, specializing in recruiting construction workers abroad, offers assistance in finding qualified backfillers who meet the highest quality and safety standards. Our goal is to support the success of construction projects by providing competent and experienced specialists who are ready to take on the challenges of the modern construction industry. Contact us to see how we can help you!