Human resources management follows an annual rhythm that rarely appears in standard operating manuals. Most compliance deadlines and operational tasks do not announce themselves in advance — they only become obvious once they have been missed.
Monthly Routines
| Task | Why It Matters |
|---|---|
| Check salary sacrifice arrangements and taxable benefit-in-kind limits | Ensures ongoing compliance with HMRC rules and avoids unexpected National Insurance or PAYE liabilities |
| Review working time records for unusual hours and overtime accruals | Acts as an early warning system for workload spikes, excessive hours, and employee burnout |
| Monitor daily rest periods, weekly rest breaks, and the 48-hour weekly limit | Verifies compliance with the Working Time Regulations 1998 (WTR 1998), tracking the 17-week averaging period and consecutive rest rules |
| Reconcile variable hours, overtime, and time-tracking data with payroll | Essential for catching data discrepancies and ensuring National Minimum Wage (NMW) compliance across all pay reference periods |
| Submit Full Payment Submission (FPS) and statutory PAYE/NIC remittances | HMRC Real Time Information (RTI) submissions must be filed on or before pay day to avoid statutory late-filing penalties |
First Quarter
By 31 March / Year-End: Statutory annual leave reconciliation and carryover. Under the Working Time Regulations 1998 (Regulations 13 and 13A), employers must reconcile untaken annual leave. Where the holiday year runs from 1 April or 1 January, ensure any contractual or statutory carryover (such as leave untaken due to long-term sickness or statutory family leave) is accurately calculated and recorded.
By 30 March / 4 April: Gender Pay Gap reporting. Employers with 250 or more employees must publish their statutory annual gender pay gap calculations on their public-facing website and the dedicated government portal (by 30 March for public bodies; by 4 April for private businesses).
March: Preparation for statutory rate uplifts on 1 April. Ensure payroll and time tracking software are updated with the newly announced National Living Wage (NLW) and National Minimum Wage (NMW) hourly rates, as well as revised Statutory Sick Pay (SSP) and statutory parental pay rates.
Q1: Annual leave capacity planning. Execute the annual review of holiday entitlements, calculate accrued untaken leave liabilities for accounting provisions, and publish the team holiday planning framework for the upcoming financial year.
Second Quarter
6 April: Commencement of the new tax year. Implement new HMRC tax codes, revised National Insurance contribution (NIC) thresholds, student loan repayment thresholds, and auto-enrolment qualifying earnings bands across all payroll systems.
By 31 May: Issue Form P60 to all employees. Provide a formal P60 certificate to every worker employed on the final day of the tax year (5 April), detailing total taxable pay, tax deducted, and National Insurance contributions.
Review workplace health and safety risk assessments, including stress audits and mental wellbeing assessments relating to working hours, lone working, and workload pressures (Management of Health and Safety at Work Regulations 1999).
Schedule statutory health surveillance for night workers. Under Regulation 7 of the Working Time Regulations 1998, night workers must be offered a free, confidential health assessment before commencing night work and at regular intervals thereafter.
June/July: Mid-year annual leave review. Issue a mid-year leave reminder to review remaining holiday entitlements, encouraging employees to schedule time off to ensure adequate operational coverage throughout summer and autumn.
Third Quarter
By 6 July: Submit Form P11D and P11D(b) to HMRC. Report all taxable expenses and benefits in kind provided to employees during the preceding tax year, supply copies to affected employees, and remit Class 1A NICs by 19 July (or 22 July if paying electronically).
August/September: Onboarding apprentices and young workers. Verify compliance with strict young worker provisions under the Working Time Regulations 1998 (maximum 8 hours per day / 40 hours per week, mandatory 30-minute rest break after 4.5 hours of work, and 12 consecutive hours of daily rest), conduct dedicated young person risk assessments, and deliver induction safety briefings.
Finalise the HR staffing and workforce budget for the upcoming financial year, incorporating total employer cost (including gross wages, employer NICs, apprenticeship levy, and employer pension contributions).
Review procedural documentation and record-keeping systems — ensure time tracking and payroll records comply with statutory retention standards under the National Minimum Wage Act 1998 (minimum 6 years) and HMRC audit rules.
Fourth Quarter
Determine mandatory holiday shutdown periods (e.g. Christmas/New Year closures). Under Regulation 15 of the Working Time Regulations 1998, employers requiring staff to take annual leave during a shutdown must give formal advance notice equivalent to at least twice the length of the leave period required to be taken.
Conduct pre-year-end working time compliance audits, reviewing average weekly hours across 17-week reference periods and checking that valid individual opt-out agreements (under Regulation 5 WTR 1998) are properly documented.
December: Prepare for calendar year-end and statutory updates. Align HR systems with upcoming rate changes announced in the Autumn Budget/Statement, ensuring all time-tracking configurations and wage floors remain fully compliant.
December: Data protection and record retention review. Conduct scheduled deletion runs for obsolete employee records, recruitment applicant data, and disciplinary records where statutory retention periods have lapsed, in compliance with UK GDPR and the Data Protection Act 2018.
Event-Driven Deadlines
These compliance deadlines are triggered by specific workplace events rather than fixed calendar dates:
| Trigger | Deadline / Action Required |
|---|---|
| Employee commencing / returning from statutory maternity, adoption, or shared parental leave | Accrual of statutory and contractual annual leave continues throughout the leave period; carryover must be accommodated if leave cannot be taken prior to the start of family leave (Maternity and Parental Leave etc. Regulations 1999) |
| Sickness absence reaching trigger points (e.g. 4 weeks continuous or Bradford Factor score) | Initiate formal absence review, return-to-work interview, or Occupational Health referral; evaluate reasonable adjustments under the Equality Act 2010 |
| Employee reaching day 8 of sickness absence | Transition from self-certification to mandatory medical evidence ("fit note" / Statement of Fitness for Work from a GP or healthcare professional) for Statutory Sick Pay (SSP) |
| Probationary period approaching completion | Conduct formal performance and retention review with sufficient time to confirm, extend, or issue contractual notice before the probationary expiry date |
| Fixed-term contract approaching expiry | Follow formal consultation and non-renewal procedures; non-renewal constitutes a dismissal in law and may trigger statutory redundancy pay if the employee has 2 or more years of continuous service |
| Allegations of gross misconduct / disciplinary matters | Investigate without unreasonable delay, issue written notice of allegations with evidence, and conduct a formal disciplinary hearing with the statutory right to be accompanied under the ACAS Code of Practice |
From Calendar to Operational Process
An HR compliance calendar only delivers value when its deadlines are integrated into daily operational workflows. Two principles ensure compliance:
- Assign specific individual accountability — designate a named HR manager with an appointed deputy, rather than assigning tasks vaguely to the "HR department".
- Automate every repeatable workflow — holiday reminders, absence trigger monitoring, and contract/parental leave milestone tracking can all be triggered automatically from central workforce data.
HR Compliance & Statutory Deadlines Calendar
Recurring HR deadlines and statutory milestones at a glance
Compatible with: Excel 2016+, Microsoft 365, Google Sheets, LibreOffice Calc
Statutory Sources and Legal Framework
Statutes and Regulatory Provisions
- Working Time Regulations 1998 (SI 1998/1833) (as amended) — Regulations 10 to 12 (daily rest, weekly rest, in-work rest breaks), Regulation 4 (48-hour maximum average working week), Regulations 13 & 13A (5.6 weeks statutory annual leave), Regulation 15 (notice of annual leave), and Regulation 9 (record keeping)
- Employment Rights Act 1996 (ERA 1996) — Section 1 (written statement of employment particulars), Section 86 (statutory minimum notice periods), and Section 98 (fair dismissal procedures)
- National Minimum Wage Act 1998 & National Minimum Wage Regulations 2015 — Statutory minimum hourly rates, calculation across pay reference periods, and mandatory 6-year employer record retention
- Equality Act 2010 & Gender Pay Gap Regulations 2017 — Duty to make reasonable adjustments for disabled workers and mandatory annual gender pay gap reporting for employers with 250+ employees
- Management of Health and Safety at Work Regulations 1999 (MHSWR 1999) — Regulation 3 (mandatory employer risk assessments, including young worker assessments and workplace stress)
- Social Security Contributions and Benefits Act 1992 — Statutory Sick Pay (SSP) and statutory family leave pay entitlements
- Maternity and Parental Leave etc. Regulations 1999 — Continuous accrual of annual leave and statutory employment rights during family leave
- UK GDPR and Data Protection Act 2018 (DPA 2018) — Lawful basis for processing, data minimisation, and statutory retention periods for employee data
- Information and Consultation of Employees Regulations 2004 (ICE Regs 2004) — Workplace information and consultation mechanisms
Key Jurisprudence & Regulatory Guidance
- Smith v Pimlico Plumbers Ltd [2022] EWCA Civ 70 — Workers are entitled to carry over untaken basic annual leave where the employer failed to give them the opportunity to take it, encourage them to do so, or warn them that untaken leave would be lost.
- King v The Sash Window Workshop Ltd (ECJ C-214/16) & Joined Cases C-569/16 and C-570/16 Bauer — Loss of annual leave entitlement requires that the employer proved it gave the worker the actual opportunity and notice to exercise leave rights.
- ECJ Judgment C-55/18 (CCOO) — Requirement for an objective, reliable, and accessible system enabling the duration of daily working time to be measured.
- ACAS Code of Practice on Disciplinary and Grievance Procedures — Statutory standard of fairness for workplace investigations, disciplinary hearings, and appeals.
Status of review: August 2026. This article does not constitute formal legal advice for individual cases.
Frequently asked questions
- Author
- PlainStaff Editorial Team
- HR Editorial Team
- Updated on