Background and objectives Introduction

4 Can productivity in SMEs be increased by investing in workers’ health? enterprises, households. This recently published ILO manual aims to create common standards for the collection of data on informality. These standards have yet to be met by national statistical bodies or authors of relevant works. It is also often not possible to re- categorize the data of published studies ex post, in order to make them compatible with the ILO definition. The definitions employed in the studies used for this literature review range from informality being determined solely on the basis of tax evasion Gatti and Honorati, 2008 to approximating the informal economy as an unregulated, voluntary, developing-country counterpart to the small scale, entrepreneurial sector in developed countries Maloney, 2004. In some studies the informal economy is referenced without an explicit definition as to what it entails Acharya et al., 2013. In a field as narrow as SME employment in enterprises with between 50 and 250 employees, where data is scarce already, adherence to the detailed ILO statistical framework on the informal economy is not achievable. Relevant publications use terms such as informality, informal employment, informal economy employment, sometimes interchangeably, according to arbitrary definitions or the respective national definitions. As some of the concepts mentioned above − such as households − are unlikely to play a role in SMEs with between 50 and 250 employees, in this paper informality and informal employment will be defined as follows: Informal employment is unregistered with the government, usually out of efforts to evadeavoid paperwork, time-consuming procedures, taxes and contributions. This may have a variety of causes, from a desire for employment of family members as backstopping and cheap labour to a simple profit motive on the part of the owner, hoping to save on taxes. Thus, workers in informal employment are often not part of statutory social security schemes. In contrast, formal employment will refer to proper registration of workers and payment of the required contributions and taxes. Data on informality will be in line with this definition unless indicated otherwise. These definitions have limitations; groups such as the self-employed are not included in either, but this is of no concern here as this paper concerns itself primarily with SMEs. Given these challenges and the general scarcity of scholarly work on social protection and working conditions in SMEs, this paper draws on more general work on working conditions and to some extent generalizes findings in order to draw conclusions on the current state of social protection in SMEs and to indicate needs for further research and data gathering. Can productivity in SMEs be increased by investing in workers’ health? 5

2. Methods

Initial research indicated that the availability of data and specific research on social protection in formal economy enterprises with between 50 and 250 employees is very limited. A substantial amount of the available scientific, official and “grey” literature deals in a rather general way with the topic and does not distinguish between SMEs and non- SMEs. The need for the collection of detailed statistical data on small and micro- enterprises has been addressed by the ILO 2013b. Against this background, the search was planned to be broad and to encompass both scholarly and non-scholarly work as well as reviews and reports from national and international organizations and NGOs. The following search engines and databases were used: - Medline - EconLit - Social Watch.org - Economywatch.com - Index Mundi - Gapminder.org - CIA World Fact Book - UNDP databank - World Bank databank - ADB Social Protection Index - ILO database - OECD database - German Practice Collection - EC database - US Social Security Administration SSA - websites of individual national schemes - Google and Google Scholar In addition, we performed a hand-search of available papers and looked up cited works. We also referred to papers known to us andor our colleagues and those mentioned in newsletters and expert fora. Although it is reasonable to assume that there are no major external differences in coverage of workers in small, medium, and large companies, substantial differences might occur with respect to internal factors, impeding coverage and access to social health protection. Employment security, working conditions and safety at work, as well as