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About Us

The contracting and recruitment world offers lots of opportunities for professionals, and Workumust offers services in a way that is different from any solution you’re used to in the market.

Founded in 2011 (SL) as a  family business, we started off with a niche product: a specialized payroll service for cross-border contractors. Because this is a rather narrow product and our business partners and clients asked for more options, we decided to expand our service inventory. The different possibilities we offer for a part payroll solution today is the most well-known of our range of services.

To further answer to the market demand, we considerably increased our in-house capacity by developing and implementing our own, user-friendly online portal.

"Highlighting the Human in Human Resources"

Throughout the years it became obvious that our clients are very loyal. This is due not only to the high quality service. It also, and maybe mainly, has to do with the way we treat people. Which is the only way we know how to: as people. There seems to be a contradiction in the term Human Resource, but we aim to overcome this contradiction by living up to our company values, of which trust and clarity are the most important ones.

I got help in finding a home in the Netherlands, and they facilitated me in childcare (amongst other things) first time I have a team helping me out like this!!


Our Team

Ron van Lieshout

Ron van Lieshout

Operational Manager

Founder of StrongLeaf & Workumust, father of Marlie and Roel, granddad of Rosa, Sofie  Naline and Anna.

Likes: Campers, Boats, cars, pugs, Brabantse 'worstenbroodjes'.

Marion Lebon

Marion Lebon

Back-Office Administrator

Marion has started to work for StrongLeaf in August '19  and has found her way with all the different procedures for our consultants. You have a good chance to get her on the phone when calling StrongLeaf. 

Likes: she likes to read, visit cinema, Museums and exhibitions, go out for dinner and do sports. On top of that she has time to take care of her 2 sons…..

Sanne C.

Sanne C.

Back-Office Administrator

Started with StrongLeaf and now Workumust in 2019 to work with a Back-Office for our common administrative tasks, Sanne showed to be a real asset to the Workumust Community. You will see her name on many emails and "when you are lucky" you will also get her on the phone when dialling our Office number.

Henny Claassen

Henny Claassen

Allround help

Saving Angel of StrongLeaf, never too busy to take on some more work. 

Likes: Hiking, fashion, jigsaw puzzles, gardening. 

Fun fact: Bakes the BEST apple pies in the world!

Martin Friesen

Martin Friesen

Payroll and Finance admin

Tamer of StrongLeaf's internal numbers and figures.

Likes: His wife, his two dogs, shooting with bow and arrow and nice weather.

Fun fact: Lives across the street from the Workumust office.

Martijn de Geus

Martijn de Geus

Application Specialist

Indispensable help for 1,000 issues and more; creator of our portal and website.

Likes: People who think before they act, nature, science.

Quote: "Impossible is impossible."

Bart P.

Bart P.


Bart is hired help, but feels as part of our team, he knows all about our technical systems IT, communicaions etc. Whenever something doesn't work or needs to be replaced or upgraded, he is helping out our team.

Likes, technical stuff, his family and their little black pug


Workumust Payroll offers personal and broad service for your salary and payrolling administration. All our payrolling clients get a tax and income advice for their specific personal situation. Our clients are divided into two categories: Self-employed and employed by us. A thorough screening of your personal circumstances and priorities will be part of the intake process, after which you will have the knowledge necessary to make the best decision. 

Clients employed by us may use the specialized all-in package deals for the placement at projects through the well-known, larger recruitment agencies. 

For self-employed clients wishing or required to cooperate with a payrolling agency, we provide specialist knowledge to make this happen. We offer a range of solutions that fit your individual (inter-)national situation, even when work and home cross borders.

Great team, always in for a social talk, and stil professional. I got the info I need and they take care of the rest. Give them a call and find out yourself.


Extra services

Settling in a new country can be a tough nut to crack, especially while you are busy getting started on your new job.

This is why Workumust has several collaborations with trustworthy service companies helping you to get your personal things straight without having to worry too much.

These services include finding a home, relocating your furniture, finding a school or day care center for your children, and so on. Because we care about our clients as if they are our own colleagues, we make sure our partner service companies provide our clients with the best solutions, care and attention possible.

Their performance is monitored and evaluated by us at set times to continuously ensure the best service.

It's not your ordinary partner for employment administration, but StrongLeaf are definitely among the most enriching and inspiring people I've ever worked with.


Contact Us

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