If you work for 15years and has been terminated by your company, you should entitle to :
Benefit = Last 12 months wage/365 x 20days x 15 years.
if your 12 completed months preceding termination earnings is rm12,000 (for example)
Benefit you entitle to the termination will be as follow :
12,000/365 x 20 x 15 = 9,863.01