Moonlighting became a live issue when several technology companies terminated employees over it. The legal position is reasonably clear once the two periods are separated.
During employment
An exclusivity or full-time-service clause is enforceable. It regulates the employment relationship rather than restraining trade after it, so Section 27 of the Indian Contract Act does not strike it down. Breach can amount to misconduct, and where standing orders or the contract classify it as such, it can justify disciplinary action including termination, subject to a fair process.
Independent of contract, some statutes restrict dual employment. Section 60 of the Factories Act, 1948 restricts an adult worker working in more than one factory on the same day, and several state Shops and Establishments Acts contain comparable provisions.
After employment
A clause preventing you from taking up other employment after you leave is void under Section 27. Indian law does not apply a reasonableness test to post-employment restraints. What survives is confidentiality, non-solicitation where narrowly drawn, and IP assignment.
Three things get people into genuine trouble: using the employer's device, network, licences or premises for outside work; a conflict of interest, particularly working for a competitor or a client of the employer; and the IP clause, under which everything you create during the employment period may be assigned to the employer, potentially including your side project. That last one is the sleeper issue for developers and designers.
Practical guidance
- Read the appointment letter and the HR policy. Many now permit outside work with prior written consent, which is the safe route.
- If you seek consent, define the scope narrowly and get the answer in writing.
- Never use employer resources, and keep the work strictly outside working hours.
- Check the IP clause carefully and, if you have a personal project, seek a written carve-out before you start.
- Two employers both filing PF for the same UAN, or overlapping Form 16s, is how dual employment usually surfaces. Assume it will become known.