This article tests whether diversity, growth, plant size, and export intensity are empirically related to manufacturing employment volatility levels across Canadian regions during the period 1976-1997. Using cross-sectional analysis, we indicate that the regions tending to be more stable are more diverse; they have lower-than-average growth rates, larger plant sizes and higher export intensity. First-difference analysis indicates that increases in diversity and export intensity are associated with decreased volatility in larger regions, but these variables have the opposite effect for smaller regions. The analysis also shows that in areas where trade has increased, ceteris paribus, plants have grown larger and diversity has decreased. The former tends to dampen volatility and the latter tends to magnify it. When these offsetting effects are taken into account, increased trade liberalisation is found to reduce volatility for large regions, but volatility increases in smaller manufacturing centres.
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