1. Almost operation period : this period is the pre-start up process to be ready for an operational phase both Mining and Power Plant operators resulting in number of participant is decreased especially in Officer level and lower positions i.e. staffs, officers daily have to standby at plant. etc.
2. Location: our offices are mainly located in 2 locations such as Phufai and Ban PhoneChan Office resulting in employees are divided into 2 groups. Operators are mainly stay in Phufai office where an event are located in New building office. It may not convenience for them to join the event.
3. Organisation structure change: last year the highest number of participant is from lower Senior level because all driver (last year is under HPC scope) and house keeper can easily participate. This year the drivers are under management of Siamrach (outsource). This factor is also linked to the 1st factor an operators are busy for pre-start up process because it is almost Operation period, resulted the drivers also standby at operational areas.