This Economic Insights article discusses a series of questions that are relevant to the interpretation and analysis of monthly changes in employment from the Labour Force Survey (LFS). Note 1 Intended as a reference document for users of the LFS data, it examines the volatility and statistical precision associated with these fluctuations. Note 2 Specifically, the article addresses the following questions: • What does the monthly change in employment measure, and how should it be interpreted? • To what extent has the volatility of these estimates changed in recent years? How does population growth affect volatility? • How statistically precise are these month-to-month changes? Has the degree of precision associated with these estimates changed over time? How much additional precision is gained by combining information from several consecutive months? • How can trend estimates be used to better understand recent movements in the data?