CUSTOMER CASE · CRANE RENTAL AND HEAVY LIFTING
Sarens Netherlands: reliable payroll calculation with VIRO
Variable working hours, mobility rules and exceptions made payroll at Sarens Netherlands heavy and error-prone. With VIRO and SOLUTIO, a fully production-ready HR engine was live in three months.
from analysis to go-live
stalled project with a previous vendor
match in the parallel runs before go-live
manual steps between SOLUTIO and VIRO
Why did the previous automation stall?
At Sarens Netherlands every site, project and crew is different. Flexible working hours, diverse mobility rules and technical roles create an exceptionally complex HR environment that payroll had to translate into correct wage calculations every month.
An international HR vendor spent two years on configurations and test cycles, but the required HR logic was never fully delivered. Payroll remained largely manual, error-prone and a burden for HR.
From analysis to go-live in three months, despite complex work regimes and mobility rules.
Crane rental and heavy lifting, the Netherlands

How does the solution work at Sarens?
VIRO uses a configurable framework instead of hard-coded logic. Calculation rules are adjusted without development work.
Analysis of all calculation rules
Working-time rules, mobility structures, allowances and exceptions were fully mapped together with the HR team.
A sharp scope from day one
Budget, timelines and acceptance criteria were clear within the first weeks.
Configuration, not custom code
The payroll logic was set up with VIRO's standard modules, efficient and audit-proof.
One data flow
Registrations are approved in SOLUTIO and then processed automatically in VIRO.
Parallel runs before go-live
Only when every calculation matched Sarens' expectations 100% did the system go live.
What are the results?
Payroll closing is faster and calmer
Calculations are significantly more accurate, with less pressure on HR
All calculations follow exactly the same rules
The chain from registration to payroll is uniform and auditable
“The greatest gain? Peace of mind. Once VIRO calculates all complex rules correctly, the pressure of manual checks disappears. Payroll closing is finally predictable and reliable.”
HR team Sarens Netherlands
Which lessons does Sarens share?
Configuration over custom development
Rules that can be changed without code shorten change cycles and reduce risk.
A clean, consistent data flow
One chain from registration to calculation removes the need for reconciliation.
Working with key users
Their domain knowledge speeds up adoption and increases reliability.
Read the full case
How the project ran in three months, from analysis and scope to the qualification phase with parallel runs.