AS 5329:2020 Workforce data quality
4.3.2  Historical workforce data management timeframes
When historical workforce data management is established, maintaining a rolling 3 to 5-year history should be used. When the initial historic workforce data cleansing is complete, the workforce data maintenance procedures highlighted in Clause 4.2 should ensure the ongoing quality of the workforce data. There may be ongoing, specific requirements for further data cleansing of specific information, e.g. changes in critical positions or capabilities. Responsibility for this ongoing historical data cleansing shall be assigned by the relevant stakeholder. The associated processes and procedures shall be developed, and relevant stakeholders informed and trained.
4.3.3  Cost of historical data cleansing
The cost of initially cleansing historical data will vary and workforce data complexity. Such issues should be taken into account when determining the extent and depth of workforce data cleansing activity to be completed.
The most appropriate approach to historic data cleansing shall be based on the following criteria:
(a) Whether the data relates to the current workforce.
(b) Whether the data relates to current critical positions.
(c) Current state of the workforce data quality.
(d) Ease and estimated cost of cleansing historical workforce data versus the anticipated benefits gained.
As a minimum, historical data cleansing activity should be focused on —
(i) current workforce; and
(ii) historical data on current critical positions and/or critical skills and capabilities.
4.3.4  Historic workforce data project team
When the decision is made to cleanse historic workforce data, a specific project team shall be established. This project team should include relevant stakeholders. An example of the composition of members includes —
(a) human resources;
(b) payroll;
(c) employee representatives;
(d) information technology; and
(e) reporting and executive.
NOTE  Internal and/or external auditors may be included as applicable.
A project plan shall be developed by the organization for the duration of the initial historic data cleansing.