Office Manager (Part-time 30hours)

Storio group; Den Haag; On-site; EUR 36,000 - 52,000; Full time

Job summary

Storio group in Den Haag seeks an Office Manager to keep our facility running smoothly. You will partner with HR, finance, site leaders, and the plant director to ensure accurate pay and responsible cost controls.

You own the time and attendance process using Pro-time, handle daily shift updates, leaves, and reconcile agency hours for 110–350 staff, ensuring precise payroll inputs and reliable management reporting.

Qualifications

• Proven experience with high-volume data entry and data integrity checks.
• Strong communication skills to resolve daily administrative issues with managers and external agencies.
• Analytical skills to spot trends, errors, and missing data points.

Responsibilities

• Manage daily time tracking and attendance records for all plant employees using Pro-time software.
• Collaborate daily with team leads, managers, and staffing agencies to correct hours, shifts, and absences.
• Track and verify sick leave, medical appointments, and no shows to maintain accurate agency invoicing.
• Close time administration systems on schedule to ensure precise weekly and monthly payroll runs.
• Prepare key hourly workforce data and cost reports for the finance manager and leadership team.
• Spot inconsistencies in shift data quickly to prevent payment errors and simplify reporting.

Skills

Time tracking

Data entry

Data accuracy

Communication

Analytical skills

Cross-functional collaboration

Tools

Pro-time

Job description

Make Your Mark as an Office Manager at Storio group

About the role

As part of our local operational team, you play a vital role in keeping our facility running smoothly. You partner closely with HR, finance, site leaders, and the plant director to manage time tracking and attendance data. Your work directly supports our site operations, making sure everyone receives accurate pay while helping us manage our costs responsibly.

You take full ownership of our time administration software, primarily using Pro-time. You handle daily shift updates, process leave, and reconcile agency hours from 110 team members off peak season and up to 350 people during peak. By keeping our operational records accurate every day, you help build a better business and support the people who make our products.

How you embrace curiosity daily

• Manage daily time tracking and attendance records for all plant employees using Pro-time software.
• Collaborate daily with team leads, managers, and staffing agencies to correct hours, shifts, and absences.
• Track and verify sick leave, medical appointments, and no shows to maintain accurate agency invoicing.
• Close time administration systems on schedule to ensure precise weekly and monthly payroll runs.
• Prepare key hourly workforce data and cost reports for the finance manager and leadership team.
• Spot inconsistencies in shift data quickly to prevent payment errors and simplify reporting.

How you make your mark

• Keep time and attendance data reliable to guarantee accurate, on time pay for all plant staff.
• Protect operational budgets by carefully auditing agency hours and eliminating overpayments.
• Build strong working relationships across HR, finance, and plant management through clear communication.
• Deliver accurate financial inputs that strengthen our weekly and monthly reporting cycles.
• Maintain high data quality standards even during high volume peak production periods.

What you bring to the team

• Proven experience with high volume data entry, detail checks, and system updates.
• Strong communication skills to solve daily administrative issues with managers and external agencies.
• Practical analytical skills with the ability to spot trends, errors, and missing data points.
• Ability to stay focused, accurate, and organized in a fast paced manufacturing environment.
• Comfort working with time tracking software and database management systems.

What sets you apart

• Prior experience working in a manufacturing or production plant environment.
• Deep practical knowledge of Pro-time software or similar time and attendance systems.