We revisit the employer size wage effect (ESWE) – arguably the most basic and influential departure from the law of one price for labor. Our main result is that this canonical fact disappears completely across establishments within the same firm, even though they operate in different local labor markets. We uncover and dissect this fact by including a firm fixed effect in otherwise standard cross-sectional regressions of wages on establishment size. We implement this demanding specification in population-wide triple-linked firm-establishment-employee data in Germany. This result is new in the ESWE literature (for which our paper also provides the first systematic meta-analysis). This wage-size decoupling is hard to square with the view that employment is determined along a finitely elastic employerspecific labor supply curve – i.e., employers pay exactly the minimum needed for the quantity of labor, but no more – the foundation of the monopsony view. By contrast, large multi-establishment firms (MEF) appear to hire off their labor supply curves (or those curves are very elastic), pay wage premia above the monopsonistic minimum, and leave excess labor supply. We find some evidence for a reemergence of the ESWE within low-premium MEFs. Overall, at least for the 25% of German employment in large firms for which the ESWE disappears, wage setting and employment determination may be better accounted for by alternative models, namely accommodating above-market-clearing wage premia and rationing of labor supply, such as efficiency wage theories.

Seit dem Angriff Russlands auf die Ukraine wird intensiv diskutiert, welche Folgen ein Lieferstopp für russisches Gas für die deutsche Konjunktur hätte. Die Projektgruppe Gemeinschaftsdiagnose hat in ihrem Frühjahrsgutachten berechnet, wann in einem solchen Fall die Gasnachfrage in Deutschland nicht mehr vollständig bedient werden könnte und es somit zu einer Rationierung von Gas kommen würde. Diese Berechnungen basierten auf der Annahme eines Lieferstopps Mitte April. Da die deutschen Gasspeicher zu Jahresbeginn unterdurchschnittlich befüllt waren, wäre infolge eines solchen Lieferstopps im Winter 2022/2023 mit einer Rationierung der deutschen Industrie und damit mit erheblichen konjunkturellen Einbußen zu rechnen gewesen.