49. The presentation went on' to emphasize the importance of adopting uniform concepts and definitions for the collection of data in censuses and surveys as an essential prerequisite for the regular com­ pilation of indicators to study the social trend. As a number of agencies were involved in statistical activities, it was necessary to standardize the concepts and definitions for a regular flow of data on a uniform basis. The concepts and definitions formulated by the United Nations and its specialized agencies might provide only broad guidelines and needed to be adapted to the realities obtaining in a country. Thus, for example, the concepts of labour force and measurement of unemploy­ ment and llnderemployment using only a short period of one week as the reference period, as adopted in developed economies, were un­ suitable for an economy with a preponderance of agricultural activities with widespread seasonal unemployment and only a small organized labour market. 50. It was agreed by the Group that in a dynamic situation there could be no finality about the concepts and definitions (of employ­ ment, unemployment and underemployment) and they had to be re­ viewed at suitable intervals so that, while comparability was maintained as far as possible, the changing requirements of the users of data could also be taken note of and satisfied by suitable modifications in the concepts where considered necessary. D. PHILIPPINES 51. The Development Academy of the Philippines, a research and training-oriented government institution, had taken the initiative in establishing a social indicators project. A multidisciplinacy research team felt that there was a serious need to quantify more fully specific the goals of the Government for the sake of an honest measurement of progress as part of an objective determination of which programmes 
**Analysis**
The text discusses the importance of standardizing concepts and definitions for collecting data in censuses and surveys, particularly in the context of employment and unemployment. It also mentions the need to adapt these concepts to the specific realities of a country. This suggests that the text is focused on issues related to employment, economic development, and social indicators.

**Category**
Employment, Economic development