4.1 The “Sub-contractor’’ ’s daily wage is calculated on normal working hours (8 hours) at Bht.323.- (Three hundred and twenty three baht only) per a day. From 1 January 2013, the “Sub-contractor” will charge 333.- (Three hundred and thirty three baht only) per a day due to the increase of minimum wage to 300.- (Three hundred baht only) per a day