In those days, the courts were usually prepared to exercise that discretion in favour of the action proceeding and not the arbitration. (heintzmanadr.com)
Public opinion may also be shifting in favour of action. (newscientist.com)
In the NUT's ballot 91.6 % voted in favour of action short of strike action and 82.5 % voted in favour of strike action with a turn out of 27 %. (politics.co.uk)