As distributed work has become normalised, a growing number of professionals hold concurrent employment arrangements with more than one employer. Dual employment — sometimes called moonlighting, parallel employment, or concurrent working — raises important questions about legality, disclosure obligations, tax treatment, and the rights and obligations of all parties involved. This guide provides a thorough, jurisdiction-aware overview of dual employment for both employees considering it and employers navigating its implications. For businesses managing internationally distributed teams where dual employment is a real operational concern, Lerio https://lerio.io provides expert compliance support across 12 markets.
What is Dual Employment
Understanding what is dual employment requires clarity on terminology. In its most straightforward sense, dual employment refers to a situation where an individual holds two simultaneous employment contracts — either with entirely separate employers, or in some structures, with a primary employer and a subsidiary entity within the same group. The arrangement is distinct from genuine self-employment or independent contracting, where the individual operates as a business supplying services rather than an employee owed statutory protections.
A secondary meaning of what is dual employment applies specifically in international employment contexts: a worker may be employed by a foreign entity while simultaneously operating through a local employer of record — creating a dual employment structure designed to achieve both local legal compliance and the worker's substantive connection to their actual operating employer. This structure is used by multinational companies managing cross-border teams.
The rise of remote work has made dual employment increasingly common, particularly in the technology sector. A software engineer contracted for 40 hours per week by one employer may simultaneously be providing consulting services to a second client. Whether this constitutes dual employment in a legally relevant sense depends on the terms of each engagement, the applicable jurisdiction's labour law, and the specific facts of the arrangement. According to research published by Harvard Business Review, an estimated 5-8% of professional workers hold concurrent employment arrangements at any given time — a figure that has risen materially since 2020.
Dual Employment Policy
Most employment contracts include provisions that are relevant to dual employment policy. Common clauses include exclusivity provisions (requiring the employee to work only for that employer), conflict of interest provisions (prohibiting work for competitors), and disclosure requirements (requiring the employee to notify the employer of any secondary work). The enforceability of these clauses varies significantly by jurisdiction.
A comprehensive dual employment policy in an employment handbook typically addresses: the requirement to disclose any secondary employment before commencing it; the circumstances under which secondary employment will be approved (typically: no competitor, no use of employer resources, no work during contracted hours, no conflict with primary duties); the process for seeking approval; and the consequences of undisclosed dual employment. Policies that are vague or unenforceable create ambiguity that benefits neither party.
Employers should review their dual employment policies in light of evolving remote work norms. A policy designed for an era of office-based, single-employer working may be both over-restrictive and under-clear in a distributed work environment. The most effective modern dual employment policies are transparent about what is and is not acceptable, proportionate in their restrictions, and practically enforceable.
Dual Employment Laws
Dual employment laws vary dramatically by jurisdiction, and professionals operating in multiple markets must navigate the applicable rules in each relevant country. In most EU member states, labour law does not prohibit dual employment per se — but it does impose obligations on both the employer and the employee that can be affected by a secondary employment arrangement.
Working time is one of the most important areas of dual employment law in European jurisdictions. The EU Working Time Directive limits working time to 48 hours per week, averaged over a reference period. Where an employee holds two concurrent employment contracts, both employers are in principle obligated to ensure their combined obligation does not cause the employee to breach this limit. In practice, enforcement is difficult — but liability exposure is real for employers who are aware of an employee's secondary arrangement and take no steps to address working time compliance.
Tax obligations under dual employment laws require careful management. In most jurisdictions, an employee with two employment incomes will be under-withheld through the standard payroll process if neither employer is aware of the other. The employee is personally responsible for the resulting tax liability, but employers may also face obligations to report secondary income arrangements to tax authorities. In Lithuania, Romania, and Ireland — all markets where Lerio operates directly — tax authorities have explicit rules governing the declaration of secondary employment income.
Dual Employment Agreement
When dual employment is formalised — whether between two separate employers, or within a structured international employment arrangement — a dual employment agreement provides the contractual framework governing the relationship. Such an agreement typically addresses the respective roles and responsibilities of each employer, the allocation of working time between arrangements, the handling of benefits and contributions, confidentiality and IP ownership, and the process for resolving conflicts between the two employment obligations.
In the international employment context, a dual employment agreement is often used when a multinational company needs to provide local employment compliance for a worker in a jurisdiction where it has no entity, while maintaining the substantive employment relationship through a parallel structure. The local employer of record is the formal legal employer for statutory purposes; the international company directs the work. A well-drafted dual employment agreement makes these respective roles explicit and protects all parties.
In summary
Dual employment is an increasingly common feature of the modern workforce, driven by the normalisation of remote work and the growing appeal of portfolio careers. Navigating it well requires clear policy from employers, transparent disclosure from employees, and proper documentation through a dual employment agreement where formal concurrent arrangements exist. For companies managing internationally distributed teams where dual employment laws across multiple jurisdictions apply, Lerio provides the compliance expertise to manage these arrangements correctly.