Trigger Points (Absence): Definition & How to Set Them

Absence trigger points are predefined attendance thresholds that, when breached, initiate a formal response to an employee’s pattern of short-term sickness absence. They give employers a structured, consistent way to manage frequent absenteeism without relying on ad hoc judgement. When set correctly, trigger points protect the business from unmanageable absence costs while treating employees fairly.

Setting them too aggressively creates a culture of fear. Setting them too loosely renders them meaningless. The goal is proportionate intervention that addresses absence before it becomes a systemic problem.

Key Takeaways

• Trigger points are predefined absence thresholds that trigger formal management action.
• They must be applied consistently, documented in a written absence policy, and communicated to all employees.
• The Bradford Factor is a widely used formula (S² × D) that weights repeated short absences more heavily than long ones.
• ACAS recommends a conversational approach before formal action — trigger points should support, not replace, reasonable management.
• Set triggers based on your organisation’s absence data, not generic benchmarks, and review them annually.

What Are Trigger Points?

Trigger points work like this: an employee’s absence record is tracked against a set of defined thresholds. When the employee’s absence hits or exceeds a trigger point, a predefined action kicks in — usually a meeting, followed by formal processes if the pattern continues.

For example, a typical trigger framework might look like:

Trigger Level	Threshold	Action
Informal	3 separate occasions of absence in 12 months	Informal conversation with line manager
Formal stage 1	4 separate occasions in 12 months, or 10 days cumulative	Formal meeting, absence review, improvement targets
Formal stage 2	6 separate occasions in 12 months, or 15 days cumulative	Written warning, formal attendance improvement plan
Formal stage 3	Further trigger breach after stage 2	Final written warning or further action

The key is that these triggers are pre-agreed, consistently applied, and clearly communicated in the employee handbook. Without a written policy, trigger points appear arbitrary and invite grievance claims.

Why Use Trigger Points?

Short-term frequent absence — one or two days at a time, recurring — is harder to manage than a single long-term absence. There is often no clear medical diagnosis, the employee may appear well on adjacent days, and managers struggle to distinguish genuine illness from other motivations.

Trigger points solve three problems:

1. Consistency — Every employee is measured against the same standard, reducing claims of favouritism or discrimination.
2. Early intervention — Without triggers, managers often tolerate absence until it becomes unmanageable. Trigger points create earlier touchpoints.
3. Evidence — If the situation progresses to a disciplinary hearing or tribunal, documented trigger-point data demonstrates a systematic, fair approach.

The Bradford Factor

The Bradford Factor is the most widely used absence-scoring formula in UK HR. It was developed to identify the disruptive effect of frequent short absences compared to fewer, longer ones.

The formula is:

S² × D = B

Where:

• S = the total number of separate absence spells in a rolling 12-month period
• D = the total number of days absent in that period
• B = the Bradford Factor score

Worked Example

Two employees each have 8 days of absence in 12 months:

Employee A — 8 separate single-day absences: S = 8, D = 8 Score = 8² × 8 = 64 × 8 = 512

Employee B — 1 absence of 8 days: S = 1, D = 8 Score = 1² × 8 = 1 × 8 = 8

Employee A scores 512. Employee B scores 8. Both had the same total days absent, but Employee A’s pattern is significantly more disruptive to the business — missed deadlines, rescheduled meetings, burdened colleagues. The Bradford Factor captures this.

Common Bradford Factor Trigger Thresholds

Score	Suggested Action
45–100	Informal conversation, review underlying causes
101–400	Formal review, set improvement targets
401–500	Written warning, formal attendance plan
500+	Final written warning, consider further action

These are illustrative, not prescriptive. Your organisation should set thresholds based on its own absence data and operational context. A factory with strict staffing requirements may need lower thresholds than an office-based team.

Limitations of the Bradford Factor

The Bradford Factor treats all absences equally regardless of cause. An employee with a chronic condition requiring regular day appointments will score high, even though the absences are medically necessary. This is where ACAS guidance and reasonable adjustments under the Equality Act 2010 become critical — you must consider the context behind the numbers.

ACAS Guidance on Absence Management

The ACAS Code of Practice on Disciplinary and Grievance Procedures does not mandate trigger points, but it strongly recommends a proportionate, progressive approach. Key principles:

Start with Conversation

Before any formal action, ACAS recommends an informal discussion to understand why an employee is frequently absent. This may reveal underlying issues — health problems, workplace stress, caring responsibilities — that require support rather than discipline.

Consider the Full Picture

Trigger points should be a starting point for investigation, not an automatic penalty. ACAS expects employers to consider:

• Whether the absences relate to a disability under the Equality Act 2010
• Whether there are ongoing health issues requiring reasonable adjustments
• The employee’s overall attendance record and length of service
• Whether the pattern has changed or is worsening

Follow a Progressive Process

ACAS supports a staged approach: informal conversation → formal review → warnings → further action. Each stage should give the employee a clear opportunity to improve and access support.

Document Everything

Every meeting, conversation, and decision relating to absence management should be recorded. If the matter reaches an employment tribunal, the documentation will be scrutinised. A tribunal will look for evidence that the employer followed a fair process, considered medical evidence, and acted consistently.

Setting Your Trigger Points

Step 1: Analyse Your Absence Data

Pull 12 months of absence data. Calculate the average number of absence days per employee, the average number of separate spells, and the distribution. Your triggers should target the upper end of the distribution — the small percentage of employees whose absence significantly exceeds the norm.

Step 2: Set Proportionate Thresholds

Based on your data, set trigger levels that differentiate between normal attendance fluctuation and problematic patterns. Most UK organisations find that 3-4 separate occasions in 12 months is a reasonable informal trigger point.

Step 3: Write the Policy

Document your triggers in a written absence policy. Include:

• The exact trigger thresholds (both occurrence-based and days-based)
• The action at each stage
• The right to be accompanied at formal meetings
• How medical evidence is obtained and considered
• The employee’s right to appeal

Step 4: Communicate and Train

Every employee should know the trigger thresholds and what happens when they are reached. Managers must be trained to apply triggers consistently and to have supportive conversations, not punitive ones.

Step 5: Review Annually

Absence patterns change. Review your triggers annually against current data and adjust if thresholds are triggering too frequently (too aggressive) or too rarely (too lenient).

Frequently Asked Questions

What is a typical trigger point for absence in the UK?

A common approach uses two parallel triggers: 3 separate occasions of short-term absence in a rolling 12-month period (for informal review), and 4 or more occasions for formal action. Cumulative day thresholds — such as 10 days in 12 months — are used alongside occurrence triggers. CIPD research consistently finds that most UK organisations use some form of trigger system.

Can I dismiss an employee solely for hitting trigger points?

Trigger points alone do not justify dismissal. You must follow a fair process — investigation, consideration of medical evidence, opportunity to improve, and warnings. A tribunal will examine whether dismissal was a proportionate response to the specific circumstances, not just whether a threshold was breached. ACAS guidance confirms that capability dismissal requires a full procedural approach.

Do trigger points apply to employees with disabilities?

Trigger points must be applied carefully to employees with disabilities under the Equality Act 2010. If an absence pattern is caused by a disability, you have a duty to make reasonable adjustments before taking formal action. This may include adjusting trigger thresholds, modifying working patterns, or providing additional support.

What is the difference between the Bradford Factor and trigger points?

The Bradford Factor is a scoring formula used to quantify the disruption of repeated short absences. Trigger points are the policy thresholds that determine what action is taken. Many organisations use the Bradford Factor score as the basis for their trigger-point thresholds, combining the mathematical scoring with a structured response framework.

How often should trigger thresholds be reviewed?

Annually at minimum. If your absence data changes significantly — for example, after a restructuring, a pandemic, or the introduction of new wellbeing initiatives — review sooner. Outdated triggers either fire too often (creating unnecessary formal processes) or too rarely (failing to address genuine problems).