The matter of hard hats and Sikh workers appeared to be settled by the Bhinder case. Of course plenty has changed on the human rights front since 1985 and the reasoning used in that case.

The hard hat issue has arisen again on several fronts that you might take note of:

West Coast Longshore

CP Rail

The outcome of these two matters will no doubt be of interest to a number of industries that employ membes of the Sikh faith.