Work4s ApS
You won the project. We'll deliver the team.
Electricians, welders & pipefitters across Europe.Data centres · Medicines · Energy · Food and dairy · Shipyards.
- 92,000 man-hours across two projects (2024 to 2025)
- Danish contracts under DI agreements (DIO I and III)
- ISO 9001:2015
- Member of the Confederation of Danish Industry
- 70 to 80 skilled tradespeople employed
Complete crews with a supervisor
Your project. Our crew.
We deliver complete crews with a supervisor, not individual workers through an agency. We handle contracts, pay, tax, housing and transport. We can show the paperwork. Planning, checks and quality stay in Danish hands.
- 01
Nobody arrives untested
We check experience and documents. We run practical trade tests before people travel.
- 02
We handle contracts and paperwork
Danish contracts under DI agreements. We handle pay, tax, housing, transport and safety equipment. We arrange papers for work abroad (A1).
- 03
Documented, not promised
Contracts, payslips, hours and certificates can be shown. Weekly report on progress, manpower, quality and safety.
- 04
The owner answers the phone
Dennis Olsen picks up himself, evenings and weekends included.
Services
Trades we deliver
Industrial manpower delivered as crews with a foreman. From welders and pipefitters to industrial electricians and refrigeration technicians.
TIG welders
TIG 141 gas-shielded welding and automatic welding around stainless process pipes.
Pipefitters
Process pipes, sections made in advance and installation from pipe drawings.
Industrial electricians
Power, cable trays and backup power for industry and data centres.
Mechanical installers
Installation of equipment, tanks, prebuilt modules and steel.
Refrigeration and ventilation
Cooling, heat pumps and ventilation in industry and data centres.
Team leaders & supervisors
Foremen, supervisors and management of the whole project.
Sectors
Sectors
We work where demands on quality and documentation are high.
Data centres
Power, cable trays, UPS and cooling.
Read more
Medicines and biotech
Sterile process pipes under good manufacturing rules (GMP).
Read more
Food & dairy
Hygienic process installation.
Read more
Energy & process industry
Biogas, steam, district heating, pressure equipment under EU rules (PED) and batteries.
Read moreShipyards & maritime
Shipyards, maritime and offshore installations.
Read moreHow we work
How we deliver a crew
Eight steps from the first call to a crew on site. We agree a start date we can meet.
- 01
Scope, trades and certificates
- 02
Screening and documents
- 03
Practical trade tests
- 04
Employment
- 05
Housing and logistics
- 06
Site start-up
- 07
Supervision and reporting
- 08
More people and replacements
Cases
Completed projects in numbers
About Work4s“I have worn the welding helmet on the big sites myself. I saw projects lost on price and delayed by the wrong people. So I built the model I was missing.”
Contact
Tell us about the project
We reply within one working day, and the owner picks up the phone himself.
+45 53 66 68 00