Salary Adjustment Letter (Hong Kong)

A Salary Adjustment Letter in Hong Kong sets out the writer's position and the response or action requested from the recipient.

Salary is one of the most fundamental terms of any employment contract in Hong Kong. Under section 2 of Cap. 57, ‘wages’ encompasses base salary, contractual allowances, attendance bonuses, and other regular remuneration — but excludes purely discretionary payments. Because salary is a fundamental term, any change to it requires mutual agreement between the employer and employee. A Salary Adjustment Letter acknowledged and signed by the employee creates a binding contractual variation, updating the employment contract without the need to execute an entirely new agreement.

Hong Kong’s Labour Department, which administers Cap. 57 and provides guidance on employment practices, strongly recommends that all changes to key employment terms be documented in writing. In any Labour Tribunal proceedings — which handle employment disputes up to HK$500,000 without legal representation requirements — a signed Salary Adjustment Letter is primary evidence of the agreed compensation terms. Without a written record, disputes about the effective date or amount of a salary change are difficult to resolve in the employer’s favour.

Beyond the direct contractual effect, a Salary Adjustment Letter triggers downstream changes to several statutory obligations. Mandatory Provident Fund (MPF) contributions under Cap. 485 are recalculated based on the employee’s revised ‘relevant income’, with both employer and employee contributing 5% up to the monthly cap of HK$30,000 relevant income. Changes to salary also affect the calculation of statutory entitlements under Cap. 57 — including annual leave pay, statutory holiday pay, sickness allowance, and long service payment — all of which are based on the employee’s average daily wages. For employees on Hong Kong work visas, a material salary reduction may also have immigration implications requiring notification to the Immigration Department.

For employers in Hong Kong’s financial services sector — licensed corporations regulated by the Securities and Futures Commission (SFC) under the Securities and Futures Ordinance (Cap. 571), or authorised institutions under the Banking Ordinance (Cap. 155) — variable pay and bonus structures must also comply with the SFC’s and Hong Kong Monetary Authority’s (HKMA’s) remuneration guidelines, which are designed to prevent excessive risk-taking. Salary adjustment letters in these contexts should be reviewed against the applicable regulatory framework before issue.

The Inland Revenue Department (IRD) administers salaries tax in Hong Kong under the Inland Revenue Ordinance (Cap. 112). Salary adjustments affect the employee’s salaries tax liability and should be reflected in the employer’s annual Employer’s Return (BIR56A and IR56B) filed each April. Where the salary adjustment involves non-cash benefits such as housing or a company car, the notional value of those benefits must be reported to the IRD in accordance with Cap. 112.

Related documents including the hk-promotion-letter, hk-employment-contract, hk-offer-letter, and hk-contract-renewal-letter should be reviewed alongside any salary adjustment to confirm the overall employment record is internally consistent and fully reflects the scope of changes to the employment relationship.

Section 24 of the Employment Ordinance (Cap. 57) requires employers to pay wages no later than 7 days after the expiry of each wage period. Where a salary adjustment results in a retroactive increase, the arrears must be paid within the same 7-day window. Failure to pay wages on time is an offence under Section 25 of Cap. 57, carrying a fine and in serious cases imprisonment. The Labour Department's Wage Security Fund (established under the Employees' Compensation Assistance Ordinance Cap. 365A) does not cover unpaid wage increases, underscoring the importance of the employer updating payroll systems promptly after a Salary Adjustment Letter is signed.

For employees whose total monthly salary exceeds HK$30,000, the MPF maximum relevant income cap under Cap. 485 means that additional salary above this threshold does not generate additional mandatory MPF contributions. The Mandatory Provident Fund Schemes Authority (MPFA) administers Cap. 485 and requires trustees — including HSBC Mandatory Provident Fund, AIA, Manulife, Sun Life, and other approved trustees — to update contribution records within the same contribution period as the salary change. Section 7 of Cap. 485 sets out the employer's obligation to enrol employees and make contributions; Section 43 provides penalties for contribution default.

A Salary Adjustment Letter in Hong Kong is needed in every situation where an employer changes an employee’s remuneration and wishes to create a formal contractual record of that change under the Employment Ordinance (Cap. 57).

Annual salary reviews: Most Hong Kong employers conduct annual performance and salary reviews, typically in January, April, or at the end of the financial year. The Salary Adjustment Letter documents the outcome of the review, confirms the new base salary and any revised allowances, and is signed by the employee to confirm acceptance.

Performance-based merit increases: Where an employee receives a salary increase specifically linked to their individual performance rating or achievement of targets, the Salary Adjustment Letter records the link between performance and the new compensation level, which is important for future reference in any employment dispute.

Promotion-related salary changes: When an employee is promoted to a new role or grade, their salary typically increases to reflect the new level of responsibility. While a Promotion Letter documents the change of role, a separate Salary Adjustment Letter or combined letter should confirm the new compensation terms to satisfy Cap. 57 requirements.

Cost-of-living adjustments: Employers who provide automatic cost-of-living adjustments — for example, linked to the Consumer Price Index published by the Census and Statistics Department — should issue a Salary Adjustment Letter for each adjustment cycle to confirm the new amount.

Salary reductions with consent: During economic downturns, restructuring, or business difficulties, employers may propose temporary or permanent salary reductions. Under Hong Kong law, such reductions require the employee’s informed written consent. The Salary Adjustment Letter must clearly state the reduction, the reason, and include the employee’s signed acknowledgement — without which the reduction is not binding and the employer may face Labour Tribunal claims for unpaid wages.

Compensation restructuring: Where an employer wishes to convert a fixed allowance into a discretionary element, or restructure the split between base salary and variable pay, a Salary Adjustment Letter documents the agreed new structure and confirms both parties understand the change’s effect on statutory entitlements.

MPF band changes: When a salary increase moves an employee above the MPF maximum relevant income cap (HK$30,000 per month), or when a reduction moves an employee below the minimum threshold (HK$7,100 per month), a Salary Adjustment Letter that notes the revised MPF contribution amounts helps the payroll team implement the change correctly and on time.

Visa holders’ remuneration changes: For employees holding Hong Kong Employment Visas or other immigration documents that specify a minimum salary level, any reduction below the visa’s stated salary may require reporting to the Immigration Department — making the written Salary Adjustment Letter an important document in the immigration compliance record.

Section 32 of the Employment Ordinance (Cap. 57) requires employers to keep wage records for each employee for at least 7 years. A Salary Adjustment Letter that is signed by the employee and retained on the personnel file satisfies this record-keeping obligation in respect of the salary variation. The Labour Department's Labour Relations Division advises employers to maintain written records of all changes to key employment terms to supports the prompt resolution of disputes before the Labour Tribunal, which operates under the Labour Tribunal Ordinance (Cap. 25) and handles employment claims up to HK$500,000 without legal representation requirements.

A legally effective Salary Adjustment Letter for Hong Kong must contain the following elements to satisfy the Employment Ordinance (Cap. 57) and create a clear contractual record.

Employer Details: Full company name, Companies Registry number, and business address. The letter should be on company letterhead and signed by an authorised representative — typically the HR Director, Managing Director, or delegated manager.

Employee Details: Full name, HKID number (or passport number for non-residents), job title, department, and employee ID. These details confirm the letter is unambiguously linked to the correct employment record.

Current Salary: Itemised breakdown of the employee’s current compensation package — base monthly salary in HKD, any contractual monthly allowances (housing, transport, meal), and any other fixed monthly payments. This baseline must be accurate before the adjustment can be properly documented.

New Salary: Revised itemised breakdown of all compensation components following the adjustment, including the new base salary and any changes to allowances or benefits. Where certain allowances remain unchanged, this should be explicitly confirmed to avoid ambiguity.

Effective Date: The specific date from which the new salary applies. This is critical for payroll calculation, MPF adjustment, and any backdating of increases where agreed.

Reason for Adjustment: A brief explanation of the basis for the adjustment — annual review, merit increase, promotion, cost-of-living adjustment, salary reduction with consent, or compensation restructuring. This creates a record of the rationale which may be relevant in future employment disputes.

MPF Impact: Revised monthly MPF contributions for both employer and employee based on the new relevant income under Cap. 485, noting the applicable statutory caps administered by the Mandatory Provident Fund Schemes Authority (MPFA).

Effect on Statutory Entitlements: A statement acknowledging that the adjustment affects the calculation of statutory entitlements under Cap. 57 — including annual leave pay, statutory holiday pay, and sickness allowance — which will be recalculated based on the revised average daily wages.

Other Terms Unchanged: An express statement that all other terms and conditions of employment remain unchanged, unless additional changes are separately documented.

Employee Acknowledgement: A signature block for the employee to confirm receipt and acceptance of the new salary terms, with space for the date of signing. This acknowledgement is essential to make the adjustment contractually binding.

Forms-legal.com provides a Hong Kong Salary Adjustment Letter template compliant with Cap. 57 and Cap. 485, covering increases, reductions, and restructuring scenarios, available in PDF and Word format.

Statutory Entitlements Impact: A detailed statement explaining the downstream effect of the salary adjustment on all statutory entitlements calculated under the Employment Ordinance (Cap. 57) — including annual leave pay under Section 41, statutory holiday pay under Section 39, sickness allowance under Section 33, maternity leave pay under Section 14P, and long service payment or severance pay calculated under Sections 31R and 31S of Cap. 57 respectively. These entitlements are all based on the employee's average daily wages over the preceding 12 months, so a salary adjustment mid-year will affect the blended average and therefore the value of each statutory entitlement accruing after the adjustment date. The Mandatory Provident Fund Schemes Authority (MPFA) should be notified of the revised relevant income through the employer's MPF trustee. Forms-legal.com provides a Hong Kong Salary Adjustment Letter template compliant with Cap. 57 and Cap. 485.