Staffing baselines and CQC Regulation 18: what care providers must evidence

What CQC Regulation 18 Requires

CQC Regulation 18 (Staffing) requires that registered persons deploy enough suitably qualified, competent, skilled, and experienced persons to enable them to provide safe care and treatment.

Two obligations are embedded in this single requirement:

1. Sufficient numbers: enough staff to meet the assessed needs of the people using the service
2. Suitable qualifications: staff must be appropriately trained and experienced for the care they provide

Getting staffing numbers right without getting skill mix right is still a breach. Getting skill mix right with insufficient numbers is also a breach.

What a Staffing Baseline Is

A staffing baseline is the documented minimum staffing level for a given shift. It is typically expressed as total staff count, broken down by role, for each shift pattern across the week.

Baselines are not static. They should reflect:

• Dependency levels of the people currently in your care
• Physical layout of your building
• Time of day (day shifts vs night shifts have different care activity levels)
• Day of week patterns (visiting and activities change staffing requirements)

A baseline established when your home had 20 residents needs revisiting when you have 32.

How CQC Assesses Staffing Evidence

During an inspection, CQC will typically:

1. Ask how you set your baselines: what methodology, how often reviewed
2. Compare rotas to baselines: were shifts actually staffed to the stated minimum?
3. Look at agency usage: high agency reliance triggers scrutiny of whether skill mix was maintained
4. Review incident and complaint data: staffing-related incidents or staff-resident ratio complaints
5. Ask staff: staff surveys and interviews often reveal operational realities that the rota doesn't show

The failure mode CQC sees most often is not that providers don't have a baseline document. It is that the rota shows persistent staffing below baseline, or that agency workers are filling roles without the required competencies.

Staffing Baseline Methodology

Step 1: Assess current dependency

Use a recognised dependency assessment tool to categorise your current residents by care intensity. Most care homes use a banding system:

Step 2: Calculate required hours

Total required care hours = sum of dependency band allocations across all residents for the shift period.

Divide by available shift hours to get minimum staff count. This is your baseline number.

Step 3: Apply skill mix requirements

Not all roles can provide all care activities. Your baseline must specify:

• Minimum registered nurse cover (for nursing homes)
• Senior carer and carer ratios
• Separate domestic/kitchen/administrative cover (these do not count toward care ratios)

Step 4: Document and date

Your baseline must be a written document, dated, reviewed periodically, and signed off by the registered manager or nominated individual.

Agency Staff: the Evidence Problem

Agency staffing introduces an evidence gap that inspectors look for specifically.

When an agency worker fills a shift, you need to evidence:

• Their competency to work at your service (not just any care setting)
• Their relevant training completion dates (mandatory training, moving and handling, etc.)
• That they were properly supervised and inducted
• That their DBS status was verified

An agency worker who is qualified on paper but not competent for your specific service (residents' conditions, building layout, care protocols) is a regulatory risk even if the rota shows the shift as covered.

A staffing governance system keeps baseline compliance visible in real time, flagging shifts that would be staffed below minimum before they are published.

Common Regulation 18 Failures

Practical Steps: Building an Inspection-Ready Baseline

1. Document your current baselines: day, evening, night, by role
2. Run a dependency assessment: annual minimum, more frequently if your resident profile changes
3. Review rotas against baselines: do this weekly, not monthly
4. Log any below-baseline shifts: with reason and compensatory action taken
5. Maintain agency competency records: separate file per agency worker who covers your service

For residential care providers, the care home compliance software guide covers the broader compliance evidence framework.

See how staffing governance and baseline monitoring works