Federal government expenses are scrutinized on a regular bases through the supply process. However, personnel expenses are typically examined in relative isolation to total program spending and generally focus on individual ministry results. Further, the Government's most visible policy and planning documents, the Budget Plan and the Update of economic and fiscal projections, do not provide detail on personnel expenses either over history or over the planning horizon. This report provides a broader perspective of the Government's personnel expenses, identifying trends in federal personnel expenses since 1990-91 and highlighting the key drivers and policy developments.