Timesheets Are a Cash Flow Problem Wearing an Admin Costume
You pay contractors on Friday and get paid in 45 days. Every hour a timesheet sits unapproved is an hour your money is somewhere else.
A contract staffing agency pays its contractors weekly. Its clients pay on net-45.
That gap is the whole business model, and it means the agency is financing several weeks of payroll at any given moment. Every avoidable day in that cycle is money the agency has out the door and not yet back.
Timesheets look like admin. They are actually the throttle on how fast the money returns, and most agencies run them loose.
Where the days go
The contractor submits late. Friday becomes Monday becomes Tuesday. On a weekly cycle, one late submission per contractor per month costs you meaningful float across a book of forty.
The approver is unavailable. A site manager who signs timesheets is on holiday, and nobody knows who covers. Three days evaporate.
Disputes surface at invoicing, not at approval. The client queries hours on the invoice, three weeks after the work. Now you are reconstructing a fortnight-old week from memory and the whole invoice sits unpaid while you do.
Invoicing runs on a schedule, not on approval. Approved hours sit waiting for the fortnightly invoice run. That is a self-inflicted delay and it is very common.
Errors bounce the whole invoice. One wrong line on a twelve-contractor invoice and the client holds all of it.
What actually shortens the cycle
Make submission the path of least resistance
Contractors submit late because submitting is annoying. If it requires a laptop, a login they use once a week, and a PDF, you will chase every week forever.
Phone-first entry, a reminder on Friday morning, and a follow-up to anyone outstanding on Friday afternoon fixes most of it. For assignments with predictable hours, pre-fill the standard week and ask them to confirm or amend — confirming takes five seconds and non-standard weeks are the exception.
Give approvers a deadline and a deputy
Approvals need a named backup on every assignment, set at onboarding rather than discovered during a holiday. Escalation should be automatic: unapproved after 24 hours, the deputy is notified; after 48, the account manager is.
Catch disputes at approval
The approval screen should show hours against the assignment's expected pattern, so anything unusual is visible at the moment of approval rather than at invoicing. A client who queries 14 hours of overtime on Monday is a two-minute conversation. The same query on an invoice three weeks later is a held payment.
Invoice from approval, not from the calendar
The moment hours are approved, the invoice can generate. If your cycle is "approve all week, invoice on the 15th", you are choosing to wait.
The margin question underneath
The other thing timesheets carry is the truth about whether an assignment is profitable.
Pay rate, bill rate, burden, overtime rules — these vary by assignment and sometimes by state. Agencies frequently discover that an assignment they thought carried a 22% margin carries 14% once overtime and burden are counted properly, and that the discovery came six months late.
If your system holds pay and bill rates per assignment and calculates margin from actual approved hours, that number is available weekly rather than at year end. It changes which assignments you fight to keep and which you let go.
What to measure
- Median hours from period end to submission, and from submission to approval. Two separate problems with two separate fixes.
- Approval-to-invoice lag. Should be near zero. If it is days, that is a process choice you can reverse this week.
- Days sales outstanding, by client. Some clients are structurally slow and should be priced accordingly.
- Disputed invoice rate, and where the disputes originate.
- Margin by assignment, from actual hours. The one that changes decisions.
The honest caveat
Some of this is not yours to fix. Large clients impose their own vendor management systems, their own portals, their own payment terms, and no amount of internal tidiness changes net-60 into net-30.
What you control is everything up to the invoice going out. Agencies routinely add a week to their own cash cycle through late submissions, absent approvers and batch invoicing — and then describe the resulting cash pressure as a client payment terms problem.
Fix your half first. It is the half that responds.
We build the assignment tracking, timesheet workflow and margin reporting behind this for US staffing agencies. See how it fits together, or tell us how your contract book runs.