Staffing is making sure you have the right number of people, with the right skills, at the right times. In shift businesses, the hard part is the times.
| Business | Demand measure | Example ratio |
|---|---|---|
| Restaurant | Covers per hour | 1 server per 20 covers an hour |
| Call center | Calls per hour and handle time | Agents needed to answer most calls within a target time |
| Warehouse | Units to pick per shift | Picks per person per hour |
| Retail | Transactions per hour | 1 cashier per set number of transactions |
Set the ratio from your own data, not an industry average. The staffing calculator turns a ratio and a demand forecast into headcount.
To build shifts, approve swaps and spot coverage gaps in one place, see EZTime employee scheduling software.
A restaurant uses a ratio of 1 server per 20 covers an hour. Its sales system shows that on Fridays between 7 and 8 p.m. it averages 140 covers, which needs 7 servers. The schedule has 5 because it was built from the average across the whole evening, about 95 covers an hour.
For three months, that hour has run 2 servers short. Tables wait, tips drop and one server leaves. The fix is a staggered schedule: 5 servers from 5 p.m., 2 more arriving at 6:30 and leaving at 9:30. The extra cost is 2 people times 3 hours, 6 server hours a Friday, much less than the cost of replacing a server.
The lesson is to staff to the peak hour, not to the average of the shift.
A staffing ratio tells you how many people the work needs at once. The schedule needs more than that, because people take breaks and some will be absent. Two adjustments cover most of it: break cover, which adds the share of the shift spent on breaks, and an absence allowance based on your own absence rate.
For example, if a shift needs 10 people working at all times, each person takes 30 minutes of breaks in an 8-hour shift (about 6%), and absence runs at 5%, schedule 10 divided by 0.94, divided by 0.95, which is about 11.2, so 11 or 12 people depending on how much risk you accept.
A warehouse picks 60,000 units in a normal week at 100 units per person per hour, which needs 600 picking hours. For a promotion week it expects 84,000 units, which needs 840 hours, 240 more.
The manager covers 120 of the extra hours by offering open shifts to part-time staff first, then 80 hours of planned overtime spread so nobody goes over 48 hours, and 40 hours from 2 temporary workers on day shift. Publishing the plan two weeks ahead fills all of it before the week starts.
Staffing decides how many people with which skills you need. Scheduling assigns specific people to specific shifts.
Forecast demand by hour, divide by how much one person can handle in an hour, and add cover for breaks and absences.
The mix of full-time, part-time, temporary and agency staff and overtime a business uses to meet demand.
Turnover, scheduling to averages, absences without backup and growth that outpaces hiring.
Extra scheduled cover based on how often people are absent. If absence averages 5%, scheduling about 5% more hours than the work needs keeps the shift covered on most days.
As a backup for peaks, yes. As the plan for normal weeks it raises cost and fatigue, and usually shows that the team is short of people.
Shift swaps, open shifts and time off requests live next to the schedule, with labor rule alerts before overtime adds up.