Statistical Yearbook Thailand 2012

classification in occupation, industry and employment status also adopted. Sanitary district, where was separated in the past, was combined into non-municipal area were presently included in municipal area. Due to the increasing demand of data for plans and policy formulation at provincial level, the National Statistical Office has expanded sample size to present data at provincial level, commencing from survey in February and August 1994 . For the fourth round in November 1998 , data were presented at provincial level for the first time. However since 1999, the results of the four rounds have been presented at provincial level. Some of the main definitions used in the survey are as follows: Employed persons Persons, aged 15 years and over, and during 7 days before the interview date, they 1 . worked for at least one hour for wages/salaries, profits, dividends or any other kind of payment, in cash, in kind; or 2 . worked for at least one hour without pay in business enterprises or on farms owned or operated by household heads or members. 3 . did not work at all or worked less than one hour (have regularly work) but 3.1 received wages/salaries, profits from business enterprise or farm during the period of absence ; or 3.2 did not receive wages/salaries, profits from business enterprise or farm during the period of absence but have regular jobs or business that they would return to work. Participation Rate = employed persons / total no. of population aged 15 and over x 100 Unemployed persons Persons, aged 15 years and over, and during 7 days before the interview date, they did not work even for one hour, had no jobs, no business enterprises, or farms of their own. Persons in this category include : 1 . those who had been looking for work, applying for a job or waiting to be call to work during the last 30 days, before interview’s date. สถิติแรงงาน 54