Unionization Structures, Budget Constraint and Privatization

DOI: 10.4236/me.2020.114073   PDF   HTML   XML   49 Downloads   126 Views  

Abstract

In this paper, we aim to explore the influence of budget constraint privatization policy in the context of mixed duopoly to examine whether privatization policy is dependent upon the unionization structure with labour productivity difference. We showed that, when the unions put equal weights on the wages and the numbers employment, the social welfare pre-privatization is always higher than the one post-privatization regardless of the type of unionization; the government should not privatize the public firm, and nationalization policy should be retained because it will provide a higher rent for the union. Furthermore, union(s) opposes the privatization policy in the presence of budget constraint and union structure.

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Cai, M. , Lu, Y. and Hsu, C. (2020) Unionization Structures, Budget Constraint and Privatization. Modern Economy, 11, 994-1005. doi: 10.4236/me.2020.114073.

1. Introduction

State-owned enterprises often have strong unions. In the process of privatization, it may have a redistribution effect on the remuneration of labour unions, and then affect the privatization process of state-owned enterprises. In Europe, countries such as Sweden, Australia, the former West Germany, Italy and the UK are moving towards a more decentralized unionization structure, as shown in Katz (1993).1 Haucap et al. (2007) discuss labour market reform in Germany towards a more decentralized unionization structure.2 There is another trend of the nationalized firm undergone privatization at the time from developing economies to transitional economies, and being criticized for not having a complete reform schemes.

The strong power of unions of the nationalized firms supported by the political party opposed the privatization policy was also highlighted by the privatization process of the fully nationalized firms. We may anticipate that workers’ unions opposed the complete privatization because they reckoned that it was going to be conducted at the expense of workers welfare. It has been recognized that a public firm may not earn positive profit in mixed oligopoly theory. Bennett and La Manna (2012) establish an irrelevance result in a closed economy with budget constraint imposing on the public firm and allowing free private entry. The issue of budget constraint is being raised in a different context of a mixed market.3 Choi (2011a) considers the budget-constraint problem in a unionized mixed oligopoly where the government decides whether or not to impose a budget on a public firm.4 Choi (2011b) takes the government’s preference for tax revenues into the theoretical framework of unionized mixed oligopolies, and investigates the efficiency of privatization. The above results differ from Ishida and Matsushima’s (2009) findings that in a unionized mixed duopoly, tightening budget constraints can enhance social welfare when the public firm is as efficient as private firms.

The research on privatization policy is numerous (see De Fraja & Delbono, 1989; De Fraja & Delbono, 1990; Matsumura, 1998; Wang & Chen, 2010 and thereafter), the implications of unionization structure on whether the public firm should be privatized were seldom thoroughly analyzed.5 Liu and Lo (2007) study the structure of union-wage Nash bargaining and it’s implication on privatization, and show that centralized bargaining is better than decentralized bargaining for welfare improvement. But they do not consider the influence of labor productivity difference, budget constraint of public firm, and discriminatory wages. Tsai et al. (2019) explore the influence of union structures and wage pricing strategies on the welfare under a mixed oligopoly which has a public firm with budget constraint. They showed that, the government should restrict the centralized union formed by the public and the private firm to charge discriminatory wages, and to avoid the improper use of the monopoly power of the labour union. However, the above two papers did not consider an important issue: should the government privatize the public firm?6

In this paper, we aim to explore the influence of budget constraint on privatization policy in the context of mixed duopoly to examine whether privatization policy is dependent upon the unionization structure with labour productivity difference.7 Major findings are that: 1) When the unions put equal weights on the wages and the numbers of employment, the government should not privatize the public firm, and nationalization policy should be retained. 2) Privatization policy is neutral in the presence of budget constraint and union structure. 3) When the union of private firm cares more about the numbers of employment, privatization is the optimal policy and compatible with the interest of unions in decentralization union.

The rest of the paper is organized as follows. Section 2 presents the unionized mixed duopoly and the results. Section 3 examines the unionized pure duopoly and the results. Section 4 explores the decision on whether to privatize by the government in the presence of union structures. Section 5 concludes.

2. Pre-Privatization and Unionization Structures

Following Tsai et al. (2019), we consider an economy with two final goods producers, firms 1 and 2. These firms produce a homogeneous product. Assuming that the inverse market demand function for the product is p = 1 q , where p is price and q = q 1 + q 2 is the total output. Assume that firm 1 requires one worker to produce one unit of output, while firm 2 requires λ workers to produce one unit of output, where λ > 1 .8 The difference in labour coefficients, which may be the outcome of a labour saving innovation by firm 1, as in Mukherjee and Pennings (2011), creates different labour productivities in the firms. The labour

productivity in firm 1 is 1 and in firm 2, it is 1 λ .9 Both firms require only workers to produce the product and the firms hire workers from labour unions.10

We will consider two types of labour unions: Firstly, Decentralized unions, where the firm-specific labour unions set wages for respective firms. Secondly, a centralized union, where an industry-wide labour union sets wage for all firms. As Yoshida (2000), it can be argued that a centralized union prefers discriminatory wages than a uniform wage. However, the government regulation may induce a centralized union to set a uniform wage (Katz, 1987; DeGraba, 1990; Haucap et al., 2001). We also consider both uniform and discriminatory wages under a centralized union.

In a mixed economy with two final goods producers, private firm 1 and public firm 2 producing a homogeneous product. The private firm as usual maximizes its profit. The public firm concerns about social welfare S W = C S + π 1 + π 2 + u 1 + u 2 but subject to the nonnegative profit constraint. CS is the consumer surplus, C S = q 2 / 2 .

We consider the following game. At stage 1, the unions set wage. At stage 2, firms 1 and 2 choose the outputs simultaneously, and the profits are realised. The backward induction is used to derive the subgame perfect Nash equilibrium (SPNE).

When there is a union in each firm, the wage is determined by the bargain result between union and its corresponding firm. Let the reserved wage be w ¯ , then the utility functions of each union are

u i = ( w i w ¯ ) θ l i , i = 1 , 2 (1)

The importance a union attaches to the wage is assigned as θ (Leahy & Montagna, 2000; Lommerud et al., 2003, 2006; Haucap & Wey, 2004; Choi, 2011a, 2011b). θ denotes the preference of the union. When θ = 1 , the unions put equal weights on the wages and the numbers of the employment; when θ = 0 , the unions care about the numbers of the employment only. In recent year, craft unions are negotiating with enterprises, and most of the disputes are focused on labor conditions, and therefore can be regarded as equal importance. To be able to focus on the purpose of this paper, the following assumptions are made: θ = 1 , and the reservation wage of the workers is normalised to zero.

First, determine the equilibrium outputs of the firms when the firm i faces the wage rate w i , i = 1 , 2 . Firms 1 and 2 maximise π 1 = ( 1 q w 1 ) q 1 and SW subject to budget constraint π 2 0 to determine q 1 and q 2 respectively. The public firm 2’s maximized problem is

max q 2 S W

s . t . π 2 = ( p λ w 2 ) q 2 0

As in Ishida and Matsushima (2009), the constraint implies there is some lower-bound restriction on the public firm’s profit, that is, the public firm faces a budget constraint. Denoting α as the multiplier of the budget constraint, the Lagrangian equation can be written as

L = S W + α π 2

Taking w i as given, the first-order conditions are given by

L q 2 = ( 1 + α ) ( 1 q 1 ) ( 1 + 2 α ) q 2 ( 1 + α ) λ w 2 + λ w 2 = 0 (2)

L α α = α ( 1 q 1 q 2 λ w 2 ) q 2 = 0 (3)

The first-order condition for the private firm is given by

π 1 q 1 = 1 2 q 1 q 2 w 1 = 0 (4)

Solving the first-order conditions (2), (3) and (4), we obtain the equilibrium outputs

which are

q 1 = λ w 2 w 1 , q 2 = 1 + w 1 2 λ w 2 , and α * = λ w 2 q 2 > 0 .11 (5)

Now determine the wages set by the unions. We consider the right-to-manage model of labour union, as in Haucap and Wey (2004) and Mukherjee (2008), to name a few.12 We assume that the unions determine wage to maximise their utilities and the firms hire workers according to their needs. To prove our result in the simplest way, we follow, e.g., Haucap and Wey (2004) and Mukherjee (2008), to assume that the unions have full bargaining power. In the decentralized unions, we have following lemma immediately.

Lemma 1: In the decentralized unions under mixed duopoly, the equilibrium is (denotes by M , d on superscript)

w 1 M , d = 1 7 , w 2 M , d = 2 7 λ , u 1 M , d = 1 49 , u 2 M , d = 8 49 , q 1 M , d = 1 7 , q 2 M , d = 4 7 , C S M , d = 25 98 , S W M , d = 45 98 .

Next, we then consider a centralized union. If the centralized union charges discriminatory wages, it determines w 1 and w 2 to maximise U c , d = u 1 c , d + u 2 c , d = λ w 2 ( 1 + 2 w 1 2 λ w 2 ) w 1 2 . We have following lemma immediately.

Lemma 2: In the centralized union scenario with discriminatory wages, the equilibrium is (denotes by M , c , d on superscript)

w 1 M , c , d = 1 2 , w 2 M , c , d = 1 2 λ , U M , c , d = 1 4 , q 1 M , c , d = 0 , q 2 M , c , d = 1 2 , C S M , c , d = 1 8 , S W M , c , d = 3 8 .

With binding budget constraint, the profit will be zero for the public firm and the union in the public firm will gain more rent accordingly.13 The centralized union charges discriminatory wages and because the low productivity is for the public firm, the union will employ more workers and force the private firm to close the shop in order to gain more rent. Under such circumstance, the utility of the centralized union is higher than the decentralized unions, but the social welfare comparison is the opposite.

If the centralized union charges a uniform wage, i.e., w 1 = w 2 = w , it determines w to maximise U c , u = u 1 c , u + u 2 c , u = w [ λ w ( 1 + 2 ( λ 1 ) λ ) ] . We have following lemma immediately.

Lemma 3: In the centralized unions scenario with uniform wage, the equilibrium are (denotes by M , c , u on superscript)

w M , c , u = λ 2 + 4 ( λ 1 ) λ , U M , c , u = λ 2 4 + 8 ( λ 1 ) λ , q 1 M , c , u = ( λ 1 ) λ 2 + 4 ( λ 1 ) λ , q 2 M , c , u = 2 + λ ( 2 λ 3 ) 2 + 4 ( λ 1 ) λ , C S M , c , u = ( 2 + λ ( 3 λ 4 ) ) 2 8 ( 1 + 2 ( λ 1 ) λ ) 2 , S W M , c , u = ( 2 + λ ( 3 λ 4 ) ) ( 2 + λ ( 5 λ 4 ) ) 8 ( 1 + 2 ( λ 1 ) λ ) 2 .

3. Post-Privatization and Unionization Structures

In this section, we examine the scenario in which both firms are profit maximizers. First, determine the equilibrium outputs of the firms when the firm i faces the wage rate w i , i = 1 , 2 . Firm 1 and 2 maximise π 1 = ( 1 q w 1 ) q 1 and π 2 = ( 1 q λ w 2 ) q 2 to determine q 1 and q 2 respectively. The equilibrium outputs are

q 1 = 1 3 ( 1 2 w 1 + λ w 2 ) and q 2 = 1 3 ( 1 + w 1 2 λ w 2 ) (6)

If there are decentralized unions, union 1 (which is paired with firm 1) sets w 1 and union 2 (which is paired with firm 2) sets w 2 to maximise u 1 d = 1 3 w 1 ( 1 2 w 1 + λ w 2 ) and u 2 d = 1 3 λ w 2 ( 1 + w 1 2 λ w 2 ) respectively. We have the following lemma.

Lemma 4: In the decentralized unions under private duopoly, the equilibrium is (denotes by P , d on superscript)

w 1 P , d = 1 3 , w 2 P , d = 1 3 λ , u 1 P , d = u 2 P , d = 2 27 , q 1 P , d = q 2 P , d = 2 9 , C S P , d = 8 81 , S W P , d = 28 81 .

Next consider a centralized union. If the centralized union charges discriminatory wages, it determines w 1 and w 2 to maximise U c , d = 1 3 [ λ w 2 ( 1 2 λ w 2 ) 2 w 1 2 + w 1 ( 1 + 2 λ w 2 ) ] . We have the following lemma.

Lemma 5: In the centralized union under private duopoly with discriminatory wages, the equilibrium is (denotes by P , c , d on superscript)

w 1 P , c , d = 1 2 , w 2 P , c , d = 1 2 λ , U P , c , d = 1 6 , q 1 P , c , d = q 2 P , c , d = 1 6 , C S P , c , d = 1 18 , S W P , c , d = 5 18 .

If the centralized union charges a uniform wage, i.e., w 1 = w 2 = w , it determines w to maximise U c , u = 1 3 w [ 1 + λ 2 w ( 1 + ( λ 1 ) λ ) ] .

Lemma 6: In the centralized union under private duopoly with uniform wages, the equilibrium is (denotes by P , c , u on superscript)

w P , c , u = 1 + λ 4 ( 1 + λ 2 λ ) , U P , c , u = ( 1 + λ ) 2 24 ( 1 + ( λ 1 ) λ ) , q 1 P , c , u = 5 12 1 4 ( 1 + ( λ 1 ) λ ) , q 2 P , c , u = 5 + λ ( 2 λ 5 ) 12 ( 1 + ( λ 1 ) λ ) , C S P , c , u = ( 7 + λ ( 7 λ 10 ) ) 2 288 ( 1 + ( λ 1 ) λ ) 2 , S W P , c , u = ( 7 + λ ( 7 λ 10 ) ) ( 17 + λ ( 17 λ 14 ) ) 288 ( 1 + ( λ 1 ) λ ) 2 .

The centralized union charges a uniform wage, we restrict our attention to λ [ 1 , 2 ] , since it ensures that the union supplies workers to both firms rather than to firm 1 (i.e., the more productive firm) only (Mukherjee et al., 2012).

4. Union Bargaining and the Decision on Whether to Privatize

From the analysis provided in the previous section, we first see that w 1 M , d < w 2 M , d < w M , c , u if ( 1 < λ < 2 ) when the difference on labour productivity is small, indicating under decentralized union, the bargaining wage for the public firm will be higher than the one for the private firm (i.e. w 1 M , d = 1 7 and w 2 M , d = 2 7 λ , w 1 M , d < w 2 M , d ). In pure duopoly without having a public firm, the low wage is paid by the low productive firm under decentralized union (i.e. w 1 P , d = 1 3 and w 2 P , d = 1 3 λ , w 1 P , d > w 2 P , d ), while when the difference on labour productivity is large ( λ > 2 ), the low wage is paid by the low productive firm irrespective of the type of union.

Next, note that under decentralized union, the bargaining wages under mixed duopoly is always less than the one under pure duopoly (i.e. w 1 M , d = 1 7 , w 2 M , d = 2 7 λ , w 1 P , d = 1 3 and w 2 P , d = 1 3 λ , then w 1 P , d > w 1 M , d and w 2 P , d > w 2 M , d ); under centralized union with discriminatory wage, the bargaining wages under mixed duopoly is identical to those under pure duopoly (i.e. w 1 M , c , d = 1 2 , w 2 M , c , d = 1 2 λ , w 1 P , c , d = 1 2 and w 2 P , c , d = 1 2 λ , then w 1 P , c , d = w 1 M , c , d and w 2 P , c , d = w 2 M , c , d ), regardless of the different objective functions pursed by the firms.

We have the following proposition.

Proposition 1: Under decentralized union, the bargaining wages under mixed duopoly is always less than the one under pure duopoly; under centralized union with discriminatory wage, the bargaining wages under mixed duopoly is identical to those under pure duopoly regardless of the different objective functions pursed by the firms.

Next, from the viewpoint of union interest, the utility of centralized union with discriminatory wages is higher than the sum of utilities under decentralized unions regardless of whether it is mixed or pure duopoly (i.e. u 1 P , d + u 2 P , d = 4 27 , U P , c , d = 1 6 , u 1 M , d + u 2 M , d = 9 49 and U M , c , d = 1 4 , then u 1 P , d + u 2 P , d < U P , c , d and u 1 M , d + u 2 M , d < U M , c , d ). The utility of centralized union with discriminatory wages is higher than the sum of utilities under decentralized unions regardless of whether it is mixed or pure duopoly.

In addition, the utility of centralized union and the sum of utilities under decentralized unions at mixed duopoly are higher than the counterparts at pure duopoly (i.e. u 1 P , d + u 2 P , d < u 1 M , d + u 2 M , d , U P , c , u < U M , c , u 14 and U P , c , d < U M , c , d ), and the reasoning for such result is that the low productive firm will produce more and hires more workers to pursue social welfare, which will lead to a higher union utility. We relegate the equilibrium values of union utilities to Table 1.

We have the following proposition.

Proposition 2: Union(s) opposes the privatization policy.

Proof: As Table 1’s results show.

Finally, it remains for us to study whether the government should privatize the public firm or not under different union structure. We relegate the equilibrium values of social welfare to Table 2.

Table 1. Equilibrium union utilities: Pre-privatization and Post-privatization.

Table 2. Equilibrium social welfare: Pre-privatization and Post-privatization.

From Table 2, social welfare pre-privatization is always higher than that of post-privatization regardless of the type of unionization. It implies that the government should not privatize the public firm and this nationalization policy should get the support from the union since it will retain a higher rent for the union. The following proposition is immediate.

Proposition 3: Nationalization is the optimal policy and compatible with the interest of unions.

Proof: As Table 2’s results show.

5. Conclusion

In this paper, we examined the issue of unionization structures and privatization of public firm with budget constraint. We showed that, when the unions put equal weights on the wages and the numbers employment, the social welfare pre-privatization is always higher than the one post-privatization regardless of the type of unionization; the government should not privatize the public firm, and nationalization policy should be retained because it will provide a higher rent for the union. Furthermore, union(s) opposes the privatization policy in the presence of budget constraint and union structure.

Appendix 1

Comparing the equilibrium union utilities and social welfares, we obtain that

U M , c , u U P , c , u = λ 2 4 + 8 ( λ 1 ) λ ( 1 + λ ) 2 24 ( 1 + ( λ 1 ) λ ) = ( 2 λ 1 ) ( 1 + 2 λ 3 λ 2 + 2 λ 3 ) 24 ( 1 λ + λ 2 ) ( 1 2 λ + 2 λ 2 ) > 0

and

S W M , c , u S W P , c , u = ( 2 + λ ( 3 λ 4 ) ) ( 2 + λ ( 5 λ 4 ) ) 8 ( 1 + 2 ( λ 1 ) λ ) 2 ( 7 + λ ( 7 λ 10 ) ) ( 17 + λ ( 17 λ 14 ) ) 288 ( 1 + ( λ 1 ) λ ) 2 = ( 5 12 λ + 13 λ 2 8 λ 3 + 4 λ 4 ) ( 5 12 λ + 25 λ 2 20 λ 3 + 16 λ 4 ) 288 ( 1 λ + λ 2 ) 2 ( 1 2 λ + 2 λ 2 ) 2 > 0

NOTES

1Under decentralized unions, wage is set between a firm and the firm-specific labour union, while under a centralized union, an industry-wide union negotiates wage for the entire industry. See, for example, Horn and Wolinsky (1988), and Davidson (1988).

2As discussed extensively in Haucap et al. (2007), a recommendation for the labour market reform in Germany was to move from the area tariff system, which is similar to our case of a centralized union, to a more flexible wage negotiation within the area tariff system or even to a decentralized wage negotiation where competition occurs among the independent firm-union pairs, as in our decentralized unionization structure. The trend over the past decades towards more decentralized unions can also be found in the OECD (2004).

3See De Fraja and Delbono (1989) for the specification of the public firm in mixed oligopoly and De Fraja and Delbono (1990) for the general review of mixed oligopoly models.

4 Wang et al. (2014) show that in the presence of cross-ownership associated with an improvement of production inefficiency of the public firm, the optimal privatization policy is full privatization whether budget constraints are imposed on the public firm.

5For literature on union bargaining in mixed oligopoly, see De Fraja (1993), Willner (1999), Gronblom and Willner (2008), Ishida and Matsushima (2009) and Choi (2011a).

6Low productivity of the public firm results from two factors, one is its low operating efficiency and another one is seldom mentioned for the policies burden which decreases the incentives resulting moral hazard, and shirking on work efforts and suffering negative profit.

7In Choi (2011a), decentralized unions are considered under unionized mixed duopoly without productivity difference, but focus on the role of strategic budget constraints. From his analysis, we could infer that total utilities in the presence of budget constraints are higher than the one in the absence of budget constraints, while the utility of the private firm remains the same.

8The public firm has a lower labor productivity which may highly due to shirking behavior in the large-size public sector. Hence, public firms are less efficient than private firms. Many empirical works do not support this view (and many other papers do support this view). Using constant marginal costs and assuming cost differences between public and private firms can be found in Mujumdar and Pal (1998), Pal (1998), Matsumura (2003), Matsumura and Ogawa (2010), and Wang et al. (2010). Note that the linearly increasing marginal cost function is more general, which is used in De Fraja and Delbono (1989), Bárcena-Ruiz and Garzón (2006), Wang and Wang (2009) and Wang et al. (2014) for the specification of linearly increasing marginal cost function under mixed oligopoly.

9See Mukherjee (2010), Mukherjee et al. (2012), and Mukherjee and Wang (2013) using the same parameter for labor productivity difference.

10This study differs from Wang et al. (2012) in which labors are homogeneous, but allow firm heterogeneity and wages in unionized labor markets for the purposes of the analyzing the decision-making of privatization policy. We appreciate the referee pointed out the relevancy of this paper.

11It means that π 2 * = 0 , and the budget constraint is binding. If we do not impose the zero profit condition for the public firm, the public firm’s production decision may lead to negative profit.

12The “efficient bargaining” model, which stipulates that the firms and the unions bargain over wages and employment, is an alternative to the right-to-manage model. See, Layard et al. (1991) for arguments in favour of the right-to-manage models.

13We appreciate the referees pointed out that this result is based on the assumption that the union has full bargaining power.

14See Appendix 1.

Conflicts of Interest

The authors declare no conflicts of interest regarding the publication of this paper.

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