Grievance Time Limits: Reasonable Timeframes and Employer Obligations

The ACAS Code requires grievances be handled 'without unreasonable delay,' but what does this mean in practice? Understanding reasonable timeframes helps both employees and employers manage expectations and comply with best practice.

ACAS Code Requirement

The Standard

ACAS Code states:

• Handle grievances without unreasonable delay
• No specific timeframes set
• Depends on circumstances
• Reasonableness assessed case by case
• Tribunal considers delays

Why No Fixed Timeframes?

Flexibility needed because:

• Cases vary in complexity
• Evidence gathering takes time
• Availability of parties
• Size of organization
• Resources available
• Parallel processes

Consequences of Delay

Unreasonable delay can:

• Breach ACAS Code
• Increase tribunal awards (up to 25%)
• Damage employee relations
• Evidence deteriorates
• Memories fade
• Suggest poor process

Typical Timeframes

Overview of Process

Standard grievance timeline:

Stage	Typical Timeframe
Acknowledgment	2-3 working days
Meeting invitation	5-10 working days
Investigation	5-15 working days
Grievance meeting	Within 2 weeks of receipt
Outcome decision	5-10 days after meeting
Appeal if requested	Similar timescales
Total process	3-8 weeks

Complexity Factors

Simple grievance (3-4 weeks):

• Clear issue
• Few witnesses
• Limited evidence
• Straightforward

Standard grievance (4-8 weeks):

• Multiple issues
• Several witnesses
• Moderate evidence
• Normal complexity

Complex grievance (8-12+ weeks):

• Serious allegations
• Many witnesses
• Extensive evidence
• Multiple issues
• Senior staff involved
• External input needed

Stage-by-Stage Timeframes

1. Acknowledgment

Timeframe: 2-3 working days

Why quickly:

• Simple admin task
• Sets tone
• Confirms receipt
• Shows taking seriously
• Reduces anxiety

What if delayed:

• Chase after 5 days
• Concerns about process
• May indicate problems

2. Meeting Invitation

Timeframe: 5-10 working days from receipt

Includes:

• Appointing investigator
• Initial assessment
• Scheduling meeting
• Providing documents
• Arranging logistics

Reasonable to take longer if:

• Complex investigation needed first
• Key people unavailable
• Holiday periods
• Gathering documents
• But keep employee informed

3. Investigation

Timeframe: Depends on complexity

Simple: 5-10 working days

• Few witnesses
• Limited evidence
• Straightforward

Standard: 10-15 working days

• Multiple interviews
• Document review
• Witness statements

Complex: 15-30+ working days

• Many witnesses
• Extensive evidence
• External input
• Legal advice
• Complicated issues

Must balance:

• Thoroughness needed
• But don't drag
• Keep progressing
• Update employee

4. Grievance Meeting

Timeframe: Usually 5+ days notice

ACAS guidance:

• Reasonable notice
• Allow preparation
• Companion availability
• Usually at least 5 working days
• Longer if helpful

Total from receipt to meeting:

• Simple: 1-2 weeks
• Standard: 2-3 weeks
• Complex: 3-4 weeks

5. Outcome Decision

Timeframe: 5-10 working days after meeting

Includes:

• Considering evidence
• Reaching decision
• Writing outcome
• Approval if needed
• Sending letter

Longer acceptable if:

• Very complex
• Multiple decision-makers
• Additional evidence
• Legal advice sought
• But inform employee

6. Appeal Process

Similar timescales:

• Acknowledge: 2-3 days
• Meeting: 5-10 days
• Decision: 5-10 days after meeting

Total appeal: 2-4 weeks typically

What Is Unreasonable Delay?

Indicators of Unreasonable Delay

Red flags:

• Weeks with no contact
• Missed deadlines without explanation
• Process drifting
• No apparent progress
• Unavailability excuse repeatedly
• No updates provided
• Months passing

Reasonable Explanations

Acceptable reasons for delay:

• Complexity requires time
• Key witness unavailable (genuine)
• Holiday periods
• Concurrent processes
• Need for external input
• Serious illness
• But must communicate

Communication is Key

Delay less unreasonable if:

• Employee kept informed
• Reasons explained
• New timeline given
• Regular updates
• Progress shown
• Good faith evident

Delay more unreasonable if:

• Radio silence
• No explanation
• Promises broken
• Appears forgotten
• No updates
• Bad faith suggested

Time Limits for Raising Grievances

No Legal Time Limit

Can raise grievance:

• At any time
• About ongoing issues
• About recent matters
• Historical issues (but harder)

But:

• Reasonable to act promptly
• Old matters harder to investigate
• Evidence may be lost
• Memories fade
• Delays may hurt case

Tribunal Time Limits

If considering tribunal:

• Most claims: 3 months less 1 day
• Redundancy/equal pay: 6 months
• ACAS conciliation extends
• Grievance doesn't extend

So:

• Raise grievance promptly
• Don't wait
• Protect tribunal rights
• ACAS before deadline

Historical Grievances

Raising old issues:

• No bar to raising
• But employer can consider delay
• Why now?
• Is investigation possible?
• Evidence available?
• Witnesses remember?

Employer should:

• Still investigate
• Do what's possible
• Note limitations
• Fair outcome
• Explain difficulties

Managing Timescales

For Employers

Stay on track:

• Diarize key dates
• Set internal deadlines
• Monitor progress
• Chase delays
• Keep employee updated
• Don't let drift

If falling behind:

• Contact employee
• Explain reason
• Give new timeline
• Apologize for delay
• Update regularly

For Employees

Monitor progress:

• Note key dates
• Expect updates
• Chase if needed
• Usually after 5 days silence
• Ask for timeline
• Document delays

If unreasonable delay:

• Chase in writing
• Escalate to HR/senior manager
• Note for tribunal
• Consider ACAS
• Continue to engage

Special Circumstances

Holiday Periods

Christmas, summer:

• Process may slow
• People unavailable
• Plan around if possible
• May need to extend
• Communicate impact

Should:

• Arrange cover
• Continue if possible
• Or brief extension
• Inform stakeholders

Sickness Absence

If key person ill:

• May need to delay
• Appoint substitute
• Or wait if reasonable
• Depends on length
• Keep employee informed

Parallel Processes

Multiple procedures:

• May extend timelines
• Suspend one for other
• Coordinate both
• Keep all updated
• Manage expectations

Urgent Grievances

Serious matters:

• Expedite process
• Don't skip steps
• Just compress timeline
• Prioritize
• Act quickly

Tribunal Considerations

Evidence of Delay

Tribunal will consider:

• How long process took
• Reasons for delay
• Communication provided
• Employee kept informed
• Reasonableness overall

ACAS Uplift

If unreasonable delay:

• Breach of Code
• Can increase award
• Up to 25%
• Depends on impact
• Seriousness of breach

Constructive Dismissal

Serious delay may:

• Breach trust and confidence
• Support resignation claim
• Show poor treatment
• Contribute to decision

Best Practice

Set Internal Targets

Organizations should:

• Set target timescales
• Monitor compliance
• Report on delays
• Learn from issues
• Continuous improvement

Example targets:

• Acknowledge: 2 days
• Meeting: 10 days
• Decision: 7 days after meeting
• Total: 4 weeks standard

Regular Communication

Keep employee informed:

• At least weekly
• More if possible
• Even if no news
• Explain progress
• Next steps
• Timeline updates

Expedite Where Possible

Speed up by:

• Prioritizing
• Allocating resources
• Efficient investigation
• Prompt scheduling
• Quick turnaround
• Don't waste time

Balance Speed and Quality

Don't:

• Rush to wrong decision
• Skip essential steps
• Inadequate investigation
• Unfair process

Do:

• Thorough but prompt
• Quality at reasonable pace
• Fair and efficient
• Right decision quickly

Checklist

For Employers

• Acknowledge within 2-3 days
• Meeting within 2 weeks
• Investigation prompt but thorough
• Decision within 10 days of meeting
• Regular updates to employee
• Explain any delays
• Monitor overall timeline
• Complete within reasonable time
• Document progress
• Learn from delays

For Employees

• Raise grievance promptly
• Note acknowledgment date
• Track key dates
• Chase if no response
• Document all delays
• Keep engaging
• Escalate if needed
• Consider ACAS if very delayed
• Protect tribunal rights

Key Principles

Without Unreasonable Delay

• Act promptly at each stage
• Don't let process drift
• Balance speed and thoroughness
• Communicate regularly

Reasonableness Depends On

• Complexity of case
• Resources available
• Genuine obstacles
• Communication provided
• Good faith shown

Communication Essential

• Regular updates
• Explain delays
• Give new timelines
• Maintain engagement
• Show progress

Quality Over Speed

• Don't rush to wrong decision
• Thorough investigation
• Fair process
• But don't waste time
• Efficient approach

While the ACAS Code doesn't set strict deadlines, 'without unreasonable delay' means acting promptly, maintaining momentum, and keeping everyone informed. Most grievances should complete within 4-8 weeks, with clear explanations and regular updates if they take longer.