From Oil & Chemical Industry in UK, most 'major' employers give shift workers ' lieu' day if BH falls on a day off & if on hourly rates, a 'lieu' day + premium time (variable from X .5 to X 2) if actually working
From memory during transition from 'hourly' to salaried staff most agreements factored something similar into the equation
Understand current UK legislation doesn't guarantee above, but it is one of BLIAR's more palatable manifesto carrots
PZULBA - Out of Africa