Foreign Shares , Human Capital and Wage Inequality : Evidence from Indian Manufacturing Firms

The interactions between Foreign Direct Investment (FDI) and human capital formations have strong implications for labour demand and supply factors in developing economies through various ways like training, direct technological diffusion, innovation and imitation. Indian economy has featured rising wage inequality and demographic dividend simultaneously since the last decade. In line with the similar research, the objective of the paper is to empirically assess this effect in Indian manufacturing firms using unbalanced panel data for the period 2001-2015. This paper uses fixed effects panel data estimation technique to get the estimates. The findings reflect that FDI is found out to be stirring up wage inequality with positive relation between relative wages and interaction term of training and FDI suggestive of positive demand side effect of FDI only through this channel.


Introduction
Inquiry into the growth drivers of countries has always been a major issue of research.Over the period of time these drivers have changed.Trade, Foreign Direct Investment 1 (FDI) and human capital have emerged as the new factors causing growth of economies.Free capital mobility among the countries led to advent of Multinational Enterprises (MNE's) 2 , thus providing a substitute to 1 Foreign Direct Investment is the Greenfield investment by some foreign national company to some other foreign host country for the purpose of production and sale.It can come under either automatic route or government route.Different sectors have different limits for FDI in India which keeps changing for with policies and time.domestic investment.This FDI has the potential to affect the host country's macroeconomic variables like growth, income, investment and employment [1].FDI directly ameliorates production through better technologies, financial capabilities, and provision of state of the art.It affects level of domestic investment via crowding in and crowding out effect.The indirect effects of FDI include spill-over effects [2] [3].[4] find foreign entry through acquisition affects positively domestic firm's productivity.[5] discuss the effect of research and development expense of foreign firms in domestic market.Similarly human capital also has significant long run impact on an economy's income and employment.Human capital formation takes place through on the job training, schooling, and other knowledge gained through experience and learning by labour force [6].
Investments in human capital affect wages.This stock of human capital determines the technological absorptive capacity of country [7].Human capital creates positive spillovers to economy [8].The research suggests that these spillover effects from human capital boost the economy through the indirect channel by increasing the quantity and the quality of labour force in economy.FDI also affects the labour market through changes in employment and wage structure of labour force [9] [10] [11].It may increase the wages in host country.It may lead to human capital formation through upgrading the skills of human capital of host countries by provision of formal training, schooling and spill-over effects of layoffs and turn overs of labour force from international firm to domestic firms [12] [13] [14].FDI affects the local level of research and development by creating positive spillovers.Thus these may be considered supply side effects of FDI on human capital formation process of the host country.On the supply side, FDI may affect the human capital formation in terms of skill up-gradation of labour force, thus contribute to supply of human capital.However in the process, FDI also demands specific kind of human capital thus also affects the wages of different categories; highly skilled, mid skilled and low skilled of human capital [15] [16].Both of these effects are crucial as they have long term consequences on labour force of host economy.The significance of either effect is important in determining the overall effect of FDI in a country.This is the first attempt to assess this effect empirically in Indian manufacturing industries for the last decade.The structure of the paper is organised as followed: In Section 2, I discuss trends of FDI, human capital formation and wage inequality in India.In Section 3, I discuss the theoretical framework.Empirical strategy has been developed in Section 4. Data has been discussed in Section 5.In Section 6, I discuss our variables formation.Section 7 presents the results of effect of FDI on human capital formation and relative wages.I also check for high technology and low technology industries in this section.Section 8 concludes the discussion.

Human Capital Base in India
Human capital base is on rise in India over the past decades.Government has come up with various policies across different layers of education system for example at primary, secondary and tertiary level there are many on -going polices in education sector.Besides that there has been increase in income level in country which has made the education more accessible resulting higher human capital base.For example: Gross enrolment ratio in tertiary education of India has increased with compound annual growth rate of 7.8% during 2001-2002 to 2007-2008 (Figure 3). 3 Similar trend is observed in spread of higher education clustered in southern states of Tamilnadu, Karnataka, Andhra Pradesh, Kerala but northern states like Bihar, Orissa, Uttar Pradesh, Madhya Pradesh being laggards.The composition of human capital is concentrated to some special courses with replacement of professional courses with general courses (Figure 4).

Wage inequality in India
Wage inequality both on average and based on skills has seen an upwards trend since last decade.Indian wage inequality has been vastly studied (Figures 1-4).[19].

Theoretical Framework
The paper follows modification of [20] [21] to analyse the effects of FDI on relative wages.It can be represented by two factor CES production function with low skilled labour (U) and high skilled labour (S) as two inputs. where and thus wage inequality depends on a supply term (relative supply of high to low skilled labor and FDI (foreign shares).The sign of 1 γ directs the effect of FDI on wage inequality.A positive 1 γ tends to increase wage inequality.ln ln

Econometric Estimation
But it actually does not solve the purpose since the goal is to see the effect of foreign direct investment on human capital formation, not to identify the supply 4 The effect of foreign direct investment on wage inequality is well researched in literature [15] [19] [22].
and demand curves, I can safely drop relative employment from Equation (4).In other words it also implies that I am are interested in the shifts in relative labour demand caused by foreign direct investment Figure 5(a) rather than identifying demand and supply curve.In latter case there is a condition of multiple equilibria Figure 5(b).To this end, our equation boils down to Equation ( 5).I estimate our final equation 6 : { } show the effect of the interaction term of FDI and human capital indicators.
Lastly 11 β , 12 β capture the size effect in the equation.

Data
Paucity This also makes us drop the log specification since I are not interested in estimating elasticity of substitution between skilled and unskilled labour. 7The Prowess database is packaged into a software.This software and the database are installed on the user's computer.The software enables database access, presentation of tabulations, plotting of charts and updation of the database.Prowess is designed to help users access information for individual companies.There are tools to search companies in the database that match search-criteria provided by users.Prowess presents several tabulations (such as financial statements) and charts (including those of share prices).These presentations help the user in quickly analysing the companies in the database.(https://prowessiq.cmie.com/).Modern Economy as our final sample.

Variables Formation
Labour demand is proxied by the relative changes in wages.Thus, our dependent variable is relative price of labour.It is the ratio of skilled to unskilled labour in a firm.I derive this indicator by dividing wages and salaries paid by firms in prowess data base to the average wages of rural sector 13

Estimation Results
My panel includes missing values on some of the variables (Appendix) which actually leads to reduce the sample size (Table 1).Another problem caused by systematic missing data is that it may produce the selection bias.But in case of missing data completely at random also termed as Missing Completely At Random (MCAR), any value of an observation neither depends on its own value nor on values of other variables in the set [25] [26].It does not produce biases though it may have less precision.Since these missing values are randomly missing, they do not affect our results of estimation and I also take robust standard errors to minimise the possibility of less precision. 14I start with estimating my baseline equation where I look at the effect of foreign shares and openness indicator of the firm while also controlling for firm level variables.Then the empirical strategy extends to include the human capital indicators one by one to see the effects of all of them on relative wages.One way of finding out the human capital formation effect of foreign shares is to incorporate the interaction term of foreign share and expenses done by firms on human capital formation through different channels.
Table 2 shows the results for the baseline equation through Ordinary Least Squares method and Fixed Effects estimation method.Column (1) finds out the positive and significant impact of openness of the firms on relative wages.
Whereas the impact of foreign shares on relative wages is negative in ordinary least squares estimation suggesting a reduction in wages inequality caused by the foreign ownership shares.On the job training which is considered to be increasing the bargaining power of the workers and thereby their salaries, comes out to be negative.The interaction term of foreign share and training has a significant and positive impact on relative wages.The problem with OLS estimation is that it does not account for the firm level effects which may cause the biased estimates in Column 2. Thus I estimate the same model with fixed effects which takes care of firm level effects in panel data models.Foreign share becomes insignificant with no changes in the sign whereas training now becomes positive.
The effects of openness and interaction term still remain positive and significant.
In Table 3, I extend the analysis by incorporating my full model in which I look for all the channels through which foreign shares may affect wage inequality in domestic firms.I test for effect of on the job training, research and development expenses, capital labour ratio and royalty expenses on relative wages separately.The reasoning is, a positive relation between relative wages and interaction term of foreign share and human capital implies supply of skills by foreign firms, is lesser than the demand for skills which is denoted by relative wages of skilled to unskilled labourers.The result is disequilibrium in skills market and increased wage inequality.The first column shows the results for training expenses on relative wages.The coefficient of training is positive and significant which actually reflects that as the employees become skilled they will also become eligible to enter into a higher income band due to increased bargaining power.The coefficient of the interaction term is positive and significant which may imply that these foreign firms are actually leading to wage inequality through provision of training to their employees (Table 3 Column

High Technology and Low Technology Sectors
In Table 4

Conclusion
This paper attempted to assess the effects of foreign direct investment on wage inequality through different channels in Indian manufacturing sector for the pe-  the firms is also a positive and significant factor contributing to wage inequality.
The newer firms specifically show the positive effect on wage inequality.The studies have tried to see effect of foreign direct investment and trade and wage inequality confirm to our results with positive effect on wage inequality.[30] find that big foreign firms have higher technological spill overs on domestic firms for Greek firms.[31] find cross country evidence of increasing skilled and unskilled wage gap for developing countries.

Figure 3 .
Figure 3. Human capital formation in India over the years.Source: All India Survey on Higher education, ministry of HRD, India.

Figure 4 .
Figure 4. Clustering of human capital (higher education) in India.Source: All India Survey on Higher education, ministry of HRD, India [32].
My basic equation is of demand and supply kind.Empirical estimation of this equation requires use of simultaneous equation method due the existence of possible endogeneity in the system.Thus the dependent variable should be relative wages and main the independent variable, relative employment along with all the demand shift factors and controls.The equation would represent the changes in relative wages of skilled and unskilled labour force being explained by differences in skill and unskilled labour force equation and it should look like Equation (4).

Figure 5 .
Figure 5. Identification problem of demand and supply curve.
for men over the years at all India level provided by Labour Bureau.This creates our index of relative labour prices that I use for relative labour demand changes.Many studies have attempted to find out the impact of FDI on development process of countries.The results are very different for developed and developing countries.I try to assess the impact of FDI on relative wage ratio of skilled and unskilled labour.I measure it by share of foreign equity in annual equity shares of firms.Some studies use binary measure of private and foreign ownership at the expense of information.But the relation between foreign ownership is better approximated as linear than binary.Openness is the frequently used indicator in literature to explain effect of international exposure of firms on wage inequality[19].My openness indicator is constituted by the ratio of sum total forex earnings, total forex spending by the total income of the firms.Openness may lead to increase in demand for skilled labour force in case of skill intensive exports.I use four indicators of human capital which may directly or indirectly lead to skill up-gradation.On the job training provided increases the supply of skilled labour force and therefore should affect the level of wages in economy by increasing the productivity and bargaining power of labour[6] [23].The measure of training is annual expenses financed by firms on training their employees which upgrades the level of skills.It has been normalised by dividing it by sales of firms.It is an endogenous tool of innovation in new growth theory.Firms invest for accumulation of 10 http://www.
knowledge capital.This accumulation of knowledge capital increases the productivity, wages and thus sharpens the skills of labour force.I use annual investment by the firms in research and development activities normalised by sales of firms.Imitation is another indirect form of human capital formation coming through adoption of technologies.Along with RnD activities firms also invest in purchasing already patented technologies.It increases the skill level indirectly by imitation of technologies.The indicator of royalty payment is expenses by firms on royalty payments normalised by sales of the firms.This is also an indirect indicator for human capital formation which works through technological changes.Multi-national enterprises encourage technological up-gradation for domestic firms.I create our capital-labour ratio by dividing gross fixed assets by number of employees in the firm.Capital-skill complementarity increases the demand for skilled labour and therefore increases wage inequality between skilled and unskilled.In order to separate the role of foreign firms on human capital formation from domestic, I use four interaction terms.These terms show the effect of foreign firms on human capital formation.This indicator looks at the direct effect of foreign firms on human capital formation and skill up gradation of employees by imparting them training.It is product of annual foreign share and training expenses by the firms.It affects the wages directly by increasing productivity and bargaining power of labour force.It shows the innovation practices made by the foreign firms in India.Theses foreign innovation practices lead to skill up gradation.It is a product of foreign share and research and development expenses by firms [2].[24] find positive effect of research and development expenses by foreign firms on total factor productivity.Foreign firms also spend on purchasing technologies to imitate them.This variable reflects the indirect effect of imitation of technology on wages of labour.Foreign share and royalty payment make up this variable.Another indicator of technological change brought about by the foreign firms is a product of foreign share and capital-labour ratio of the firms.It shows the direct effect of foreign technology on wage inequality.I take the size of firms in all the specifications in order to control for the firm specific characteristics.It is the total annual sales of the firms.Larger firms give higher packages to their employees.Size 2 term is included to account for the non-linarites' in firm specific indicators.It is a square term of size of firms.It represents that as the size of the firm increases the size of packages they offer to their employees declines.
1).Next I test for the innovation channel Column 2 shows the results for effects of research and development expenses and its interaction term with foreign share on relative wage inequality.Research and development expenses by foreign firms are not found to affect relative wages.Similarly the coefficient of RnD and foreign shares is negative but not significant.Thus I cannot conclude anything about this channel of effect.Column (3) shows the results for the indicator for technological change.The coefficient of capital labour ratio is found to be insignificant and positive whereas the coefficient of interaction term of capital labour ratio and foreign shares is as well insignificant.The result of the channel of royalty is G. Baranwal DOI: 10.4236/me.2017.890801161 Modern Economy riod 2001-2015.Labor mobility, innovation, technological changes and imitation are the channels which I used to see this effect.The results indicate positive effect of on the job training by foreign firms on wage inequality.I find that specifically this channel has strong effects in creating the wage inequality in manufacturing sector in India.All the other channels like innovation, imitation and technological changes are found to be insignificant.The results also suggest the existence of this effect particularly for the high technology sectors.Openness of [19] has found positive effect of skill biased technological change and wage inequality in Indian manufacturing sector caused by changing nature of production.Similarly[22] find positive effect of FDI on wage inequality in India and propose skill biased technological change as the channel of this effect.But none of these studies talks about the channel of on the job training in assessing the effect of foreign direct investment on wage inequality which has been showed in this paper.There have been studies which estimated the productivity spill overs from FDI but they also focus on the innovation channel to assess the productivity effects from FDI.Thus this paper proposes a new and strong channel which could explain positive wage inequality.The paper can be further extended to other sectors like services and explore the various heterogeneities at different levels like entity, ownership etc.Further the limitation of the paper is that it ignores the possible endogeneity in FDI and human capital.Thus future research can be extended to the dynamic estimation techniques or instrumental variable techniques.
United States of America, for 2013-15, according to a survey of global companies conducted by UNCTAD.Foreign Direct Investment in India has increased from $ 104,411 in year 2000-2001 to $ 696,011 in 2011-2012.The distribution of FDI inflow is concentrated to some sectors.Services, Construction, Communication, structure, policy environment, business climate, and presence of agglomeration economies[17] [18].
So now I implicitly assume relative employment is given exogenously and I am are estimating the shifts in demand side of labour market explained by other factors like FDI, openness firm specific factors and their interaction terms.Thus the main hypothesis of the paper will be to find out if parameters 1 β , 2 β , 3 β , 5 β , 6 β show the effect of human capital indicators and 7 β , 8 β , 9 β , 10 β Strong domestic and export demand have caused growth of the sector.The government has begun policy to setup Petroleum, Chemicals and Petrochemicals Investment Regions (PCPIR) which is an investment region spread across 250 square kilometres with basic infrastructure for the manufacture of domestic and export related products of chemicals, petroleum and petrochemicals.10Consumergoods industry has grown with compound annual 5.1.1.FDI Policy and Indian IndustriesFood processing industry accounts for 9% share of manufacturing GDP with average annual growth rate of 8.4%.FDI is allowed 100% of under automatic route except for items reserved under Micro, Medium and Small enterprises where FDI limit is 24% through automatic route.The structure of demand for food has changed in Indian with a shift towards more processed form with changed consumer preferences.The government has implemented different schemes to boost FDI in this sector like establishing Mega Food Parks and Agri-Export Zones.8Textileindustrycontributes14% of industrial output and 4% of the total GDP in India."Thecountryattracted $198.86 million foreign capital in the sector during April-March 2013-14, up 91.41 percent", says Business Standard, August, 15, 2014.Textile industry also allows for 100% FDI under automatic route.9Thegovernment has come up with Technology Up gradation Fund Scheme, Inte-

Table 1 .
Description of variables.

Table 2 .
Effect of FDI on relative wages.(Baseline model).

Table 3 .
Effect of FDI and openness on relative wages (baseline model).All the results are based on fixed effects panel data estimation.All the nominal values have been deflated by industry wise whole sale price index with the base year 2004-2005.Time fixed effects are also included.All the reported errors are robust standard errors.presented in Column (4).The coefficients of royalty and interaction term are not significant refraining me to conclude anything from them.Thus the results reflect only one channel positively affecting wage inequality which on the job training.All other tested channels of innovation, technological change and imitation are insignificant and inconclusive.

Table 4 .
, I present the result of high technology sectors and low technology sectors separately for all the channels through.High technology sectors include chemicals, metal, machinery and transport equipment and low technology sectors include textile, food, consumer goods, and construction.Column shows the effects for the channel of on the job training.I find that only the interaction term Effect of FDI on relative wages (high skilled and low skilled industries).All the results are based on fixed effects panel data estimation.All the nominal values have been deflated by industry wise whole sale price index with the base year 2004-2005.All the reported errors are robust standard errors.effectsonwage inequality.Table5shows the results for firms belonging to different age groups.Column (1) presents the results for the firms belonging to age group of oldest firms which are more than 65 years of age.Only the coefficient of foreign share and training is significant and negative.All the other variables are insignificant.In the case of firm from 65 -44 year's age group I do not find any significant result.Whereas the firms belonging to 43 -30, 2 -25 and less than 24 years all have a positive and significant effect of interaction term of foreign shares and training on wages inequality.The reason behind this result could be that the new firms may be lacking in resources to training the employees but still they add to the demand for skills in the labour market.On the other hand the old firms are established and equipped with resources to spend on training and help the human capital formation in labour market.
Foreign share itself is positive but the training channel effect is negative.All the other channels are insignificant and ineffective to wage inequality.As another robustness check I check for the age wise heterogeneity in the G. Baranwal DOI: 10.4236/me.2017.890801163 Modern Economy training channel

Table 5 .
Age-wise effect of FDI on relative wages and human capital.: All the results are based on fixed effects panel data estimation.All the nominal values have been deflated by industry wise whole sale price index with the base year 2004-2005.All the reported errors are robust standard errors. Note