This Practice Note considers the question of international jurisdiction in relation to employment disputes, ie whose courts and/or tribunals should decide an employment case where either the employee works abroad or there is a foreign employer. It considers the impact of Brexit and IP completion day and provides a summary of the provisions of the Civil Jurisdiction and Judgments Act 1982, which determine jurisdiction for proceedings instituted from 1 January 2021 onwards. It examines the recast Brussels I Regulation (EU) 1215/2012 (Brussels I (recast)), when the employment-specific provisions in Section 5 (Articles 21–23) of Brussels I (recast) apply, how to establish jurisdiction, the domicile test, the habitual place of work test and the place of business test, claims by an employer, where forum is agreed under a jurisdiction clause or jurisdiction agreement and where such agreements will be effective in an employment context. The Jenard test for deciding whether a dispute has arisen for the purposes of the rules on whether a jurisdiction agreement is effective is examined, the effect of the ET Rules, whether there is scope for a stay, parallel proceedings, where Brussels I (recast) does not require or confer jurisdiction. The Practice Note also provides an overview of the Lugano Convention.