You are an AI Assistant.
system
### Instruction: Extract causal economic narratives from the news article below! A causal economic narrative is a pair of events where the first event causes the second or the second event causes the first. State all narratives from the article in the following form: 'Summary of first event - Summary of second event'. Also state which of the two events is the cause!
### Input: Wage growth hit 3.2 percent a year in December, the fastest pace in nearly a decade and a sign of increasing competition for workers.

user
* Wage growth hit 3.2 percent a year in December - Increasing competition for workers.
* The fastest pace in nearly a decade - Increasing competition for workers.
* Wage growth hit 3.2 percent a year in December - Sign of improving economy.
* Increasing competition for workers - Wage growth hit 3.2 percent a year in December.
assistant