Timesheet compliance is a persistent challenge for engineering consultancies. For organisations delivering complex, multi-phase projects, accurate time management is fundamental to how projects are billed and controlled.
When timesheets are submitted late or filled out quickly at the end of the week, the consequences extend far beyond administrative inconvenience. It can lead to lost billable revenue, unreliable utilisation data and delayed visibility into project performance.
Improving timesheet compliance isn’t about forcing engineers to spend more time on admin. It’s about making time tracking simple, intuitive, and connected to how projects are actually delivered.
Why Timesheet Compliance Matters
In engineering consulting, hours are revenue.
Accurate time booking directly affects project cost tracking, margin control, resource utilisation and forecasting. When time is recorded inconsistently or submitted late, engineering firms lose visibility into how projects are performing.
This becomes particularly critical for fixed-fee projects and multi-disciplinary teams delivering work across defined phases. Without accurate time recorded at a work package level, it is difficult to track actual progress against planned progress or maintain control over project budgets.
This often leads to several common challenges:
- Lost billable hours when time is forgotten or recorded inaccurately
- Unreliable utilisation reporting makes resource planning difficult
- Budget overruns are discovered too late due to delayed effort tracking
- Managers waste time chasing submissions instead of focusing on delivery
For consultancies operating on tight margins, even small gaps in time capture can have a significant financial impact.
Research suggests that consultants who wait until the end of the week to complete timesheets can lose 10–15% of their billable hours to memory gaps and estimation errors. For a 20-person team billing at £100/hour, that represents tens of thousands of pounds in potential revenue leakage each year. (Source: ClickTime)
The Utilisation Picture Across Professional Services
Engineering and consulting firms typically target a billable utilisation rate of around 80%. This means 80% of available hours should be spent on chargeable project work. According to industry benchmarks, architectural and engineering firms target approximately 80% as the firm-wide average, with 70% or below considered below average.
The SPI Professional Services Maturity™ Benchmark Report, which surveys thousands of professional services organisations globally, found that industry-wide billable utilisation fell to 68.9% in 2024, dipping below the 75% threshold that most firms consider the minimum for sustainable profitability. The same report found that firms using purpose-built project management and time-tracking tools achieved billable utilisation rates 10% higher, project margins 24% higher, and EBITDA 28% higher than those relying on manual or disconnected systems.
These figures underscore why accurate time recording is directly tied to a consultancy’s financial health: it is not just an administrative gripe.
Common Problems with Time Tracking
The problem is rarely that engineers don’t understand the importance of timesheets. More often, the issue lies with the systems and processes used to record time.
Many organisations still rely on spreadsheets or legacy tools that are disconnected from project management and financial systems. These processes create unnecessary friction for users.
Common frustrations include:
- Timesheets take too long to complete.
- Project team members have to search through lists of proposals, project and non-billable codes which is a manual and time-consuming process.
- Teams lack sufficient visibility into project budgets and remaining hours.
- Re-entering or duplicating data between systems.
When the process feels slow or repetitive, timesheets are often left until the last minute which increases the likelihood of errors or missing hours.
Industry research consistently shows that the longer the gap between when work is performed and when it is recorded, the less accurate the entry. Engineers managing multiple work packages across concurrent projects are particularly vulnerable to this effect, as context-switching makes it harder to reconstruct where time was actually spent. (Source: Replicon)
How Proteus Makes Time Booking Faster and Easier
Research shows that improving time tracking can significantly reduce productivity leakage and increase revenue. Improving timesheet compliance starts with removing friction from the process. The easier it is to record time, the more likely teams are to complete timesheets accurately and on time.
To achieve this, consultancies need tools designed around how engineering teams work. Proteus is built specifically for engineering consultancies, with workflows designed around how teams actually operate. Our new Timesheet Module makes booking time more quickly and efficiently.
- Faster Time Entry
The intuitive grid interface allows users to quickly enter their hours with features like drag-to-copy and the ability to copy time entries from the previous week’ to reduce repetitive admin. Users can also add comments, where necessary, that managers can view when they submit their time.
- Relevant Project Selection
Instead of scrolling through long code lists, users can only see and select the projects, proposals and non-billable codes they are assigned to. This accelerates the time booking process and reduces the risk of incorrect time allocation.
- Real-time Budget Context
By hovering over work packages, you can see booked, remaining and budgeted hours, this allows team members to confidently record time against the correct work packages and understand the impact on project budgets.
How Proteus Streamlines Approvals for Project Managers
Timesheet compliance doesn’t stop at submission. It also depends on how easily managers can review and approve submissions. When approvals require multiple steps or involve disconnected systems, delays are inevitable.
Proteus’ upgraded Timesheet Module provides a more effective approval process for project managers.
- Managers can see pending and approved submissions with visibility into how recorded time impacts budget. This ensures approvals are not just administrative but directly support project control and budget management.
- Timesheets can be approved, reopened or bulk-approved with just a few clicks.
- Team members are automatically notified if further action is required.
Project managers can also take advantage of enhanced reporting features, which provide full transparency across submitted, missing and approved hours as well as overall worker utilisation. These audit and time reports are exportable for further analysis, ensuring you have sufficient information to manage project time booking and track compliance.
Delayed approvals compound the cost of late submissions. When managers approve timesheets days after they are entered, discrepancies are harder to resolve, and the data is less reliable for billing and project control. Streamlined, in-context approval workflows help close this gap.
The Importance of Connecting Time Tracking With Project Performance
Timesheets become far more valuable when they are integrated with project controls and aligned to the work breakdown structure (WBS), rather than existing as an isolated administrative process.
When timesheet data is connected to project controls, consultancies can:
- Monitor project budgets in real time
- Track utilisation and resource allocation accurately
- Improve forecasting accuracy
- Identify potential overruns earlier
- Maintain accurate billing and revenue forecasts
This level of visibility allows project teams to move from reactive reporting to proactive project management.
According to the SPI Maturity Benchmark, high-performing professional services companies with the highest levels of process maturity generate annual revenue per consultant that is 31% higher than lower-maturity peers. A key differentiator is the use of integrated project and time management systems that connect resource data with financial outcomes in real time.
Improving Timesheet Compliance in Practice
Ultimately, improving timesheet compliance is not about stricter policies or more reminder emails.
It is about creating a system that makes time tracking easy for engineers and valuable for project managers.
When timesheets are quick to complete, aligned to project workflows and provide useful insights into budgets and performance, compliance improves naturally.
Solutions like Proteus help engineering consultancies bring time tracking, project management and financial visibility together. This enables engineering consultancies to capture billable hours accurately and maintain control over project performance.
Sources
SPI Research / Deltek, Professional Services Maturity™ Benchmark Report (2024 & 2025 editions)
ClickTime, Billable Hours Template & Best Practices Guide
Runn, Utilization Rate Benchmarks for Professional Services Firms (2025)
Replicon, Common Pitfalls in Professional Services Time Tracking (2024)
Kantata / SPI, 2024 Professional Services Maturity Benchmark
