It must be the generosity of EI: no. It must be the generosity of welfare: no. It must be that women are entering the labour market in record numbers: no. It must be militant unions: no. It must be Canada post workers: no. It must be a wage price spiral: no. It must be inflexible labour markets: no. It must be tight labour markets: no. It must be capacity utilization is maxed: no.
It must be factors that almost nothing to do with the domestic economy: Bingo!
What is the solution. Austerity, further deregulation and privatization, punitive labour market policies, more free trade and increased interest rates.
I am so not looking forward to the next four years.
Relentlessly Progressive Political Economy 
I believe the answer to your question is quite simple – Greed.