Profile
ID 197773
Bert-Jan RUISSEN
European Conservatives and ReformistsTracked since 28/10/2024
Total assistants
10
Currently active
6
Total departed
4
Departed share
40.0%
4 of 10
Office over time
10 own staff since we started watching
One bar per person, from the day we first saw them to the day they left — or until today. A faded left edge means they were already in place on 28/10/2024; a faded right edge means they left at an unknown date before 03/03/2026.
| Name | Category | From | To |
|---|---|---|---|
| Cornelis Reinardus BOS | Accredited assistants | tracked since 28/10/2024 | in post |
| Fetsje Tjitske VAN HOUDT | Accredited assistants | tracked since 28/10/2024 | in post |
| Helene Catharina Maria GOOIJERS | Accredited assistants | tracked since 28/10/2024 | in post |
| Petrus Jacobus Leonard DEN BOEF | Accredited assistants | tracked since 28/10/2024 | left before Mar 2026 |
| Aart Dinant PIERIK | Accredited assistants | 07/03/2025 | in post |
| GERCO VAN DER KAAIJ | Accredited assistants | 17/01/2026 | 05/06/2026 |
| Walter JORDAAN | Local assistants | tracked since 28/10/2024 | in post |
| Maarten Joost VERHOEVEN | Local assistants | 09/01/2025 | left before Mar 2026 |
| VOOGD ACCOUNTANTS B.V. | Paying agents | tracked since 28/10/2024 | left before Mar 2026 |
| VOOGD ADVISEURS B.V. | Paying agents | 03/10/2025 | in post |
Departed share comparison
Share of observed own staff who have since left (since 28 Oct 2024).
By category
| Category | Own active | Own departed | Own total | Pool active | Pool total |
|---|---|---|---|---|---|
| Accredited assistants | 4 | 2 | 6 | 0 | 0 |
| Paying agents | 1 | 1 | 2 | 0 | 0 |
| Local assistants | 1 | 1 | 2 | 0 | 0 |
Active assistants · 6
| Name | Category | Since | |
|---|---|---|---|
| Cornelis Reinardus BOS | Accredited assistants | 28/10/2024 | |
| Helene Catharina Maria GOOIJERS | Accredited assistants | 28/10/2024 | |
| Fetsje Tjitske VAN HOUDT | Accredited assistants | 28/10/2024 | |
| Aart Dinant PIERIK | Accredited assistants | 07/03/2025 | |
| Walter JORDAAN | Local assistants | 28/10/2024 | |
| VOOGD ADVISEURS B.V. | Paying agents | 03/10/2025 |
Office size
Own staff in post per month. Dashed before 03/03/2026: reconstructed from arrivals only. The dashed horizontal line is the median office in the Parliament (5).
| Month | Count | Estimated |
|---|---|---|
| 2024-11 | 4 | yes |
| 2024-12 | 4 | yes |
| 2025-01 | 4 | yes |
| 2025-02 | 4 | yes |
| 2025-03 | 5 | yes |
| 2025-04 | 5 | yes |
| 2025-05 | 5 | yes |
| 2025-06 | 5 | yes |
| 2025-07 | 5 | yes |
| 2025-08 | 5 | yes |
| 2025-09 | 5 | yes |
| 2025-10 | 6 | yes |
| 2025-11 | 6 | yes |
| 2025-12 | 6 | yes |
| 2026-01 | 7 | yes |
| 2026-02 | 7 | yes |
| 2026-03 | 7 | no |
| 2026-04 | 7 | no |
| 2026-05 | 7 | no |
| 2026-06 | 6 | no |
| 2026-07 | 6 | no |
| 2026-08 | 6 | no |
| 2026-09 | 6 | no |
| 2026-10 | 6 | no |
How long staff stayed
Tenure of staff whose departure is dated. Contracts that ended before 03/03/2026 have no known length and are not shown.
1 dated departure · office median 5 mo · Parliament median 16 mo
| GERCO VAN DER KAAIJ | 5 |
Former assistants · 4
| Name | Category | From | To | Duration | |
|---|---|---|---|---|---|
| GERCO VAN DER KAAIJ | Accredited assistants | 17/01/2026 | 05/06/2026 | 5m | |
| Petrus Jacobus Leonard DEN BOEF | Accredited assistants | 28/10/2024 | left before Mar 2026 | — | |
| VOOGD ACCOUNTANTS B.V. | Paying agents | 28/10/2024 | left before Mar 2026 | — | |
| Maarten Joost VERHOEVEN | Local assistants | 09/01/2025 | left before Mar 2026 | — |
Our record of the register begins 28/10/2024. "Tracked since" marks a person who was already in place on that day — their actual start date is earlier and is not published to us. Read about the data →