How to build a staff roster around a weekly wage budget
A wage budget turns keeping an eye on wages into a number the roster has to fit. Work out the week’s budget from forecast sales, convert it into hours, place the shifts that matter most first, and check the cost before the roster goes out. This article works through a cafe week from forecast to finished roster.
Most small businesses find out what a roster cost when the pay run arrives. By then the week is over, and the only thing left to change is next week. A weekly wage budget reverses the order: decide what the week can afford first, then build a roster that fits it, and see any gap before anyone works a shift.
A wage budget does not mean rostering as few people as possible. It means putting hours where they earn their keep, and knowing before you publish when a week is heading over.
Start with a sales forecast
A wage budget is only as good as the sales figure behind it. For each day of next week, write down what you expect to take, using the same week last year, the last four weeks, bookings, local events and the weather. The daily figures matter more than the weekly total, because they show where the hours should go.
Turn the forecast into a wage budget
Pick a target wage cost as a share of sales, taken from your own better weeks, and apply it to the forecast:
weekly wage budget = forecast sales × target wage cost %Decide what the budget includes and keep it the same every week. Include super: the super guarantee is 12% of an eligible employee’s qualifying earnings, and from 1 July 2026 it is paid each payday. Penalty rates, casual loading and allowances belong in it too. How to track labour cost across multiple venues lists what to count.
There is no single right target. A cafe with table service and heavy weekend trade needs a larger share of sales than a counter-service shop open weekdays, so work from your own history rather than a figure borrowed from somewhere else.
Know what an hour costs on each kind of day
To turn dollars into hours, you need an average cost per hour for each kind of day. Weekend hours cost more: Saturday and Sunday work attracts penalty rates under the Restaurant Industry Award (clause 24), the Hospitality Industry (General) Award (clause 29) and the General Retail Industry Award (clause 22). Casuals are also paid a 25% loading under clause 11.1 of each of those awards.
Work out a weekday and a weekend cost per hour from your team’s actual rates plus super, using the current figures on your award’s pay rates page, such as the Restaurant Industry Award pay rates. The weekend and public holiday hours calculator separates the hours that cost more.
Place the hours in order
With a budget and a cost per hour, build the roster in this order:
- Fixed and guaranteed hoursFull-time employees, and part-time employees’ guaranteed hours, go in first, because they are paid whether the week is busy or not.
- Minimum coverEvery open needs someone to open it, every close someone to close it, and every shift the skills it cannot run without.
- The peaksPut hours where the forecast says trade will be highest, using a rule for how many people each level of trade needs.
- The shouldersAdd hours before and after the peaks only as far as the budget allows.
- A small reserveKeep a few hours unallocated for a busier day than forecast or a sick call.
- Cost and checkTotal the draft roster against the budget before you publish it, not after the week.
How many employees a restaurant needs per shift sets out a way to decide the people each level of trade needs, and the roster cost calculator totals a draft roster so you can compare it with the budget.
A worked example: a cafe week
A cafe covered by the Restaurant Industry Award forecasts $24,000 in sales next week. Its target, from its own better weeks, is 30%, so the wage budget is $7,200 including super. From the team’s own rates plus super, the owner uses $40 an hour for casual hours on weekdays and $50 an hour on weekends. These are figures for this example, not award rates.
| Line | Hours | Cost |
|---|---|---|
| Manager, full-time | 38 | $1,900 |
| Cook, part-time guaranteed hours | 30 | $1,200 |
| Casual hours, Saturday and Sunday | 40 | $2,000 |
| Casual hours, Monday to Friday | 50 | $2,000 |
| Total | 158 | $7,100 |
The fixed hours take $3,100 of the budget, leaving $4,100. The weekend needs 20 casual hours each day, and 40 hours at $50 is $2,000, which leaves $2,100 for weekdays: 52.5 hours at $40. The owner rosters 50, spread across the weekdays by forecast sales, for $2,000.
| Day | Forecast sales | Casual hours |
|---|---|---|
| Monday | $2,600 | 9 |
| Tuesday | $2,600 | 9 |
| Wednesday | $2,800 | 10 |
| Thursday | $3,000 | 10 |
| Friday | $3,500 | 12 |
| Saturday | $5,200 | 20 |
| Sunday | $4,300 | 20 |
| Week | $24,000 | 90 |
Friday gets the most weekday hours because the forecast says it is the busiest weekday. Sunday gets the same 20 hours as Saturday on lower sales, because the cafe still needs its opening and closing cover on both days. The split follows the forecast and the minimum cover, not habit.
The roster comes to $7,100, or 29.6% of forecast sales, with $100 held back, 2.5 weekday hours, for a busier day than expected. Every casual shift is at least 2 hours, the minimum engagement under clause 11.3, and the cook’s 30 guaranteed hours are rostered in full.
When the draft comes in over budget
If the first draft costs more than the budget, work through these before cutting anyone’s shift:
- Check the forecast. If a function or a long weekend justifies extra hours, raise the budget on purpose and note why.
- Trim the shoulders. Start the first shift later or finish the last one earlier where trade is thin.
- Move hours to the busy days. A quiet weekday afternoon often holds hours that Saturday needs.
- Watch the expensive hours. Work that can be done on a weekday, such as prep or stock, costs less there than on a weekend.
- Stagger the starts. Bring people in as the peak builds instead of everyone at opening.
What a budget cannot override
A wage budget is a plan, and the award still applies to every hour in it. These rules limit how far a roster can be trimmed:
| Rule | What it means for the budget | Where |
|---|---|---|
| Casual minimum engagement | A casual must be engaged and paid for at least 2 consecutive hours each time they attend work, so a 1 hour shift saves nothing | Restaurant and Hospitality awards, clause 11.3 |
| Casual minimum engagement | A casual’s minimum daily engagement is 3 hours, or 1.5 hours in the circumstances clause 11.3 sets out for full-time secondary school students | General Retail Industry Award, clauses 11.2 and 11.3 |
| Part-time minimum | A part-time employee must not be rostered for fewer than 3 hours in a day | Restaurant Industry Award, clause 10.7(b) |
| Part-time minimum | A part-time employee’s minimum daily engagement is 3 consecutive hours | General Retail Industry Award, clause 10.9 |
| Guaranteed hours | A part-time employee’s guaranteed hours are agreed in writing, and can only be changed with their written consent | Restaurant and Hospitality awards, clauses 10.4 and 10.5 |
| Changing a published roster | A full-time or part-time employee’s roster can be changed by agreement or with 7 days’ notice | Restaurant Industry Award, clause 15.3(d) |
Rules differ between awards, so confirm yours with the Fair Work Ombudsman’s Find my award tool. The glossary explains minimum engagement, and how to roster part-time and casual employees together covers these rules in more detail.
Give the budget to whoever builds the roster
If a manager builds the roster, give them the budget before they start, as dollars and hours for each day, not as a comment after the pay run. Agree what they can change without asking, such as moving hours between weekdays, and what needs your approval, such as going over budget for a function. A budget the person building the roster never sees cannot shape it.
After the week: budget, roster and actual
The budget is a forecast, the roster is a plan and the timesheets show what happened. After the week, put all three beside actual sales. If the roster matched the budget but actual hours ran over, the problem is on the floor: early starts, late finishes or extra shifts added on the day. If sales missed the forecast, the forecast is what needs work next week. The rostered versus worked hours calculator shows the hours gap for each person.
Roster Flow handles the hours that feed a wage budget: availability and leave from staff phones, the roster published to everybody at once, clock ins that become timesheets, and approved hours sent to Xero, MYOB or a CSV file.
A weekly wage budget checklist
- A sales forecast for each day of next week
- A target wage cost percentage from your own better weeks
- A budget that includes super, penalty rates, casual loading and allowances
- A weekday and a weekend cost per hour from current rates
- Fixed and guaranteed hours placed first
- Peaks covered before shoulders, with a small reserve kept back
- Every shift at or above the award’s minimum engagement
- The draft roster costed against the budget before it is published
- Budget, roster and actual hours compared after the week
Questions
How do I work out a weekly wage budget?
Multiply next week’s forecast sales by your target wage cost percentage. A $24,000 forecast at a 30% target gives a $7,200 budget, with the target taken from your own better weeks.
Should super be included in the wage budget?
Yes. The super guarantee is 12% of an eligible employee’s qualifying earnings, and from 1 July 2026 it is paid each payday, so it is part of what each week costs.
Can I cut a part-time employee’s hours to meet the budget?
Not their guaranteed hours without agreement. Under the Restaurant and Hospitality awards, guaranteed hours are agreed in writing and can only be changed with the employee’s written consent.
Are lots of short shifts cheaper?
Not below the minimum engagement. A casual must be paid for at least 2 hours each time under the Restaurant and Hospitality awards, and has a 3 hour minimum daily engagement under the General Retail Industry Award in most cases.
What if the roster still comes in over budget?
Check whether the forecast justifies the extra hours, then trim quiet shoulders and move hours to busier days. If the week genuinely needs more, raise the budget on purpose and note why.
How often should I set the wage budget?
Every week, from that week’s forecast, before you start building the roster. Review the target percentage every few months and whenever award rates change.
Sources
- Fair Work Ombudsman: tax and superannuation
- Fair Work Ombudsman: find my award
- Fair Work Commission: Restaurant Industry Award 2020 [MA000119]
- Fair Work Commission: Hospitality Industry (General) Award 2020 [MA000009]
- Fair Work Commission: General Retail Industry Award 2020 [MA000004]