From the Avincis Q 4 2013 statement dates 29/4/14
This is probably the reason you have taken a hit on your terms and conditions. Unionised V non unionised employee groups all within the one company.
If our workers engage in a strike, work stoppage or other slowdown, other employees elect to become unionized, existing labor agreements are renegotiated, or future labor agreements contain terms that are unfavorable to us, we could experience a disruption of our operations or higher ongoing labor costs, which could adversely affect our business, financial condition and results of operations.