After a year of negotiations, the workers decided to take a series of escalating actions to place pressure on IWC to settle. They take the following actions, in this order:

* They wear "We Want a Fair Deal" buttons on their uniforms during their shifts.

* They conducted a strike vote, with 75% of workers voting in favour of a strike.

*They refuse to accept voluntary extra shifts or overtime, only doing so when the manager makes it mandatory.

* They set up information picket lines outside the store using workers who are not currently on shift. They stop working for an hour at a time during morning peak hours.

*They go out on a full strike, establishing a picket line in front of the store.

*They delay customers to hand out leaflets and explain the situation but do not prevent them from entering.

*They set up picket lines at other IWC locations nearby, including those operated by franchisees, to inform customers of their dispute and slow traffic at those locations.

*They set up a picket line at the company to which Big Coffee contracts for distribution, preventing trucks from leaving the warehouse.

1. At which point do workers need to issue a strike notice for the series of actions to remain in compliance with the labour relations code? Why?

2. Assuming the union issued strike notice at the appropriate time, which of these actions are legally permitted? Why and Why not?