Staffing Rosters for Events

This guide explains how to model staffing rosters and labour cost for events, functions and venue hires in Model Reef.

You will:

• Define event specific roles and roster patterns by venue and event type.

• Convert rosters into hours, headcount and labour cost over time.

• Link staffing to event volumes, service standards and seasonality.

• Use scenarios to test roster models, wage changes and event mixes.

Model Reef is not a rostering or timesheet system. It models planned staffing at a level suitable for financial forecasting, not individual shifts in an operational system.

Model Reef models planned staffing for forecasting and decision-making, not operational shift-level rostering.

When to use this pattern

Use this pattern when:

• Labour cost is a major component of event profitability.

• Staffing requirements vary significantly by event type and size.

• You want to connect rosters to revenue, margin and cashflow.

• You need to evaluate different staffing strategies before implementing them.

It can be combined with:

• Event and Function Profitability Model

• Seasonal Revenue Planning

• Venue Level Forecasting Pack

• Build a Staffing Cost Model

Architecture overview

Event staffing modelling uses:

• Role structure

  • Roles per venue and event type.

  • Distinctions between front of house, back of house, bar, security and management.

• Roster drivers

  • Hours per role by event and event size.

  • Day part and day of week patterns.

  • Seasonality and event specific uplift.

• Cost and timing

  • Hourly rates, loadings and on costs.

  • Casual versus permanent staff mixes.

  • Payment frequency and delays.

• Scenario logic

  • Alternative roster templates.

  • Wage rate and loadings changes.

  • Event mix and service level changes.

1

Step 1: Define roles and staff variables by venue and event type

List the roles required for your events, such as:

• Event Manager

• Front of House staff

• Bar staff

• Chefs and kitchen staff

• Event set up and pack down crew

• Security

For each venue and event type, create Staff variables, for example:

• Staff - Venue Ballroom - Weddings - Front of House

• Staff - Venue Ballroom - Weddings - Bar

• Staff - Venue Ballroom - Corporate - Event Manager

These variables will hold the cost and timing behaviour for each role.

2

Step 2: Build roster drivers per event and per role

In the Data Library, define roster drivers such as:

• Base Hours per Event per Role for a standard event of a given size

• Incremental Hours per Additional Guest or per additional guest band

• Setup and pack down hours per event

• Additional staffing for special formats or VIP events

Combine these with event drivers from the Event and Function Profitability Model to compute:

• Total Hours per Role per Event Type per Period

• Headcount equivalents if you want to approximate number of staff

Example formula:

• Hours per Period = Events × Base Hours per Event + Events × Guests per Event × Incremental Hours per Guest

This yields period-level labour hours for each role.

3

Step 3: Attach wage, loading and on cost assumptions

For each Staff variable, attach cost drivers including:

• Base Hourly Rate

• Weekend and public holiday loadings

• Evening or late night loadings if applicable

• On Cost Percentage for tax and benefits

Compute labour cost using formulas such as:

• Wage Cost = Hours × Effective Hourly Rate

• Total Staff Cost = Wage Cost × (1 + On Cost Percentage)

If using a mix of casual and permanent staff, either:

• Model each group as separate staff variables with different rates, or

• Use weighted average rates and on costs

4

Step 4: Reflect payroll timing and cashflow

Use timing settings on Staff variables to reflect payroll cycles, for example:

• Weekly, fortnightly or monthly payments

• Short delays between accrual and cash payment

This will:

• Record staff costs in P&L in the period events occur

• Create short term payables where payment lags event dates

• Show payroll cash outflows in the Cashflow Statement and Cash Waterfall

Check that timing matches your actual payroll processes.

5

Step 5: Use scenarios for roster, wage and event mix changes

Clone the base model into scenario models to explore:

• Different roster templates for the same event type

• Changes in service standard (for example more staff per guest)

• Wage increases due to awards, inflation or negotiation

• Different event mixes (e.g., more corporate events and fewer low-value events)

In each scenario, adjust:

• Hours per event and per guest assumptions

• Wage and loading rates

• Event drivers and mix assumptions

• Seasonality patterns used in roster drivers

Compare scenarios using:

• Labour cost per event and per guest

• Labour percentage of event revenue

• Venue and group level EBITDA and margins

• Cashflow impact of payroll changes

Check your work

• Roster based hours reflect realistic staffing patterns for sample events.

• Wage rates, loadings and on costs match your actual cost structure.

• Scenario changes produce plausible labour cost outcomes.

• Outputs are useful for discussion between finance, operations and HR.

Troubleshooting

Labour cost appears too low or high compared to history

Recheck hours per event, wage rates and on costs, and ensure all relevant roles are included.

Staff cost does not respond to changes in event volume

Introduce variable components, such as incremental hours per guest, in addition to fixed staffing per event.

Model becomes cluttered with too many roles and event types

Group similar roles into families and use representative events for smaller or less frequent formats.

Related guides

• Build a Staffing Cost Model

• Build a Forecast from Ticker Fundamentals

• Tax Logic

• Manual Time Series Editing