W.B. Guimarin Case Study

Industry
Mechanical Contracting
Company Overview
Founded in 1903
Jonas Partner Since
2002
Company Size
120 Employees
Headquarters
Columbia, South Carolina
Previous System
Multiple Systems

Problem

WBG relied on separate tools for payroll, accounting, and job costing, resulting in inefficiencies and restricted visibility into job performance. Reporting was limited, workflows were manual, and staff could not easily compare job hours, task performance, or cost trends, slowing both administrative work and operational decision-making.

Strategy

To eliminate redundancies and gain better visibility, WBG adopted Jonas as its all-in-one ERP, integrating payroll, job costing, reporting, and financial management. With Jonas providing a centralized, construction-specific platform, the team gained accurate data, customizable reporting, and the insights needed to manage jobs more effectively.

Results

With Jonas, WBG reduced payroll processing time from multiple days down to just six hours, dramatically improving efficiency. Staff found the system highly user-friendly, and the integrated platform strengthened operational accuracy and positioned the company to operate with greater confidence and clarity.

Background

W.B. Guimarin & Co. is a long-standing mechanical contractor specializing in comprehensive HVAC, plumbing, and mechanical services for commercial, industrial, and institutional clients, offering everything from new construction installations (chillers, data centers, medical gas) to proactive maintenance and emergency support.

Overview

Human Resources Manager Karen Boone sat down with Jonas Construction Software to share how W.B. Guimarin transformed its payroll, reporting, and job visibility after struggling with the limitations of disconnected systems.


The Problem

W.B. Guimarin previously struggled with the inefficiencies of using separate systems for payroll, accounting, and job costing. Karen noted, “I can’t even imagine how anybody would want that,” as managing each function in a different system became increasingly time-consuming and prone to errors.

Before moving to Jonas, WBG was burdened by:

  • Payroll taking several days to complete
  • Reporting lacking the necessary flexibility
  • Teams struggling to compare job hours and task durations
  • Not able to identify trends that could help operations

Manual work prevented staff from focusing on value-added tasks and slowed decision-making.

The Strategy

The company transitioned to Jonas as its centralized ERP, replacing fragmented tools with a fully integrated platform for payroll, job costing, and reporting. With Jonas, W.B. Guimarin gained:

  • A user-friendly system accessible even to non-technical staff
  • Custom reporting capabilities that allowed Karen to build reports herself
  • Better job and task visibility
  • Consistent, accurate data for payroll and performance analysis

The shift provided the structure and visibility required to manage operations more effectively.

The Results

Payroll reduced from days to six hours

Karen shared that payroll, once a multi-day process, now takes only six hours, significantly reducing administrative burden.

Better reporting and job insights

Jonas allows the team to analyze job hours, compare performance across tasks, and build detailed reports with the exact information they need.

Highly user-friendly tools

Karen emphasized that she is not an IT person, yet could build and customize her own reports in Jonas, demonstrating the system’s ease of use.

Significant room for future growth

W.B. Guimarin currently uses a portion of Jonas’ full capability, leaving substantial opportunity for future expansion.

Karen stated, “We’re using about this much of what Jonas has available… we have so much growth potential in just that one program.

About Jonas Construction Software

Jonas Construction Software offers integrated construction software solutions tailored to the needs of the construction industry, particularly  mechanical and specialty contractors. 

With a commitment to building software focused on accounting automation, enterprise efficiency, and superior cost reporting, Jonas’ comprehensive suite of solutions includes automated accounting and payroll, project management, service management, and supporting integrated operations. To learn more about how Jonas can help your service and construction business enhance cash flow predictability and maximize profits, request a demo today.

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