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Employment Effects of Import Competition on Agro-Based Manufacturing Firms in Nigeria

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Mar 31, 2025

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Fig. 1.

Employment trends in the agro-based manufacturing sector relative to other manufacturing sectorsSource: own elaboration.
Employment trends in the agro-based manufacturing sector relative to other manufacturing sectorsSource: own elaboration.

Augmented Dickey-Fuller and Philips-Perron test results

Variables Augmented Dickey-Fuller Philips-Perron

level first difference level first difference
Agro-based employment –0.926153 (0.7679) –5.338468*** (0.0001) –0.926153 (0.7679) –5.333959*** (0.0001)
Import competition –6.209607*** (0.0000) –8.824391*** (0.0000) –6.046655*** (0.0000) –22.62678*** (0.0000)
Export competition –3.838764*** (0.0059) –4.247444*** (0.0028) –3.761789*** (0.0072) –17.09377*** (0.0000)
The real unit cost of labour –1.724242 (0.4099) –3.008093** (0.0442) –1.852611 (0.3494) –3.415431*** (0.0171)
The real unit cost of capital –2.861429* (0.0603) –3.062900** (0.0397) –3.178403** (0.0299) –5.905108*** (0.0000)
Capital stock –3.561595** (0.0119) –10.28647*** (0.0000) –3.615875** (0.0104) –10.28647*** (0.0000)
Trade openness –4.325298*** (0.0016) –7.985181*** (0.0000) –4.325298*** (0.0016) –8.839291*** (0.0000)
Inflation –3.844590*** (0.0059) –7.293581*** (0.0000) –3.319971** (0.0215) –7.254398*** (0.0000)
Government expenditure –1.955653 (0.3042) –7.975877*** (0.0000) –1.821846 (0.3642) –8.215169*** (0.0000)
GDP –0.246311 (0.9229) –4.695348*** (0.0006) –0.313039 (0.9129) –4.685923*** (0.0006)
Term of trade –1.377002 (0.5822) –5.424852*** (0.0001) –1.416345 (0.5632) –5.418927*** (0.0001)
Exchange rate –2.542989 (0.1147) –4.990801*** (0.0003) –4.581614*** (0.0008) –4.969465*** (0.0003)
Trade change –5.152617*** (0.0002) –12.76739*** (0.0000) –5.203911*** (0.0001) –18.99583*** (0.0000)

Effect of import competition on agro-based manufacturing employment

Variable Coefficient Std. Error t-Statistic
Agro-based employment (−1) 0.720135 0.112151 6.421145
Import competition –0.519281** 0.196405 –2.643927
Export competition 0.061332** 0.022390 2.739248
Capital stock 0.331159** 0.136306 2.429528
The real unit cost of capital –12.96077*** 3.913717 –3.311627
The real unit cost of labour –13.13876*** 3.858474 –3.405171
The real unit cost of labour (−1) 1.165559 1.623533 0.717915
Trade openness –2.904632*** 0.935867 –3.103679
Trade openness (−1) 1.283825 0.842004 1.524725
Government expenditure 0.130835 0.329177 0.397462
Inflation 2.307890*** 0.766158 3.012291
Constant 7.713598 9.254997 0.833452

R-square 0.743974
Adjusted R-Square 0.717178
S.E. of regression 1.031591
Sum of square resid 24.47616
Log-likelihood –43.40400
F-statistic 35.22912
Prob(F-statistic) 0.000000

Effects of terms of trade on agro-based manufacturing employment

Variable Coefficient Std. Error t-Statistic
Agro-based employment (−1) –0.096561 0.104709 –0.922191
Term of trade 1.616888*** 0.554821 2.914251
Trade change 0.011922*** 0.002069 5.761680
GDP 0.612010*** 0.108197 5.656433
Loan to the manufacturing sector 1.071373 1.574155 0.680602
Exchange rate –0.394448*** 0.121349 –3.250525
Exchange rate (−1) –0.369479* 0.216776 –1.704426
Constant –10.05131*** 2.101823 –4.782184

R-square 0.757691
Adjusted R-Square 0.725053
S.E. of regression 0.430910
Sum of square resid 5.199142
Log-likelihood –16.29290
F-statistic 11.29815
Prob(F-statistic) 0.000002