Table A5 OLS estimates of labour market...

Table A5

OLS estimates of labour market concentration on skill/competency demand (group 1), TF-IDF measure; with time-variant fixed effects

	Skills	Knowledge	Ability	Activities	Styles
log(HHI)	0.0008**	−0.0010***	−0.0002	0.0006	0.0008*
	(0.0004)	(0.0004)	(0.0002)	(0.0004)	(0.0004)
Year × Prov	✓	✓	✓	✓	✓
Year × Ind	✓	✓	✓	✓	✓
Year × ISCO4	✓	✓	✓	✓	✓
MDV	0.099	0.082	0.017	0.094	0.103
mean(HHI*10k)	1,319	1,319	1,319	1,319	1,319
R²	0.141	0.148	0.021	0.132	0.124
N	552,960	552,960	552,960	552,960	552,960

	Skills	Knowledge	Ability	Activities	Styles
log(HHI)	0.0008**	−0.0010***	−0.0002	0.0006	0.0008*
	(0.0004)	(0.0004)	(0.0002)	(0.0004)	(0.0004)
Year × Prov	✓	✓	✓	✓	✓
Year × Ind	✓	✓	✓	✓	✓
Year × ISCO4	✓	✓	✓	✓	✓
MDV	0.099	0.082	0.017	0.094	0.103
mean(HHI*10k)	1,319	1,319	1,319	1,319	1,319
R²	0.141	0.148	0.021	0.132	0.124
N	552,960	552,960	552,960	552,960	552,960

Note(s): Each observation consists in a vacancy. This table reports the OLS regression outputs using as dependent variables the TF-IDF intensity measure of the broader skill classification (group 1) described in section 4. The independent variable is the log of the employment HHI, measured at the industry (2-digit ATECO code), province (NUTS-3), and year level. All the regressions also include occupation (ISCO 4-dig) fixed effects. Robust standard errors in parentheses ***p < 0.01, **p < 0.05, *p < 0.1

Source(s): Authors' calculation on AIDA and Wollybi data in 2015–2018 period

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