General principles
Individuals to whom the DCC applies shall be subject to the social security legislation of a single State only; specifically, a person pursuing an employed activity in a State shall be subject to the social security legislation of that State (lex loci laboris – pay where you work), and such legislation shall apply as if they were resident and ordinarily resident in that State.
Detached worker
An individual who is employed in one State by an employer normally operating there and is posted by that employer to the other State to perform work on their behalf, shall remain subject to the social security legislation of the State where the activities are normally carried out, provided the anticipated duration of such work does not exceed 36 months.
This provision also extends to an individual posted from the territory of a third country not party to the DCC, provided that the individual pays, or is liable to pay, contributions under the legislation of the State where their employer was established immediately before being posted. Additionally, it encompasses an individual who pursues an employed activity in the other State due to personal choice, so long as this activity is undertaken with the employer's agreement.
An individual who has completed a period of employed activity in the other State while remaining subject to the legislation of the State where their employer is established shall not be eligible to commence a new period under this provision until a waiting period of six months has elapsed since the end of the previous period.
Exceptions to the general rules
The competent authorities of the UK and India may, by common agreement, provide for exceptions to the general principles and the detached worker provisions, provided this is in the best interest of the individual or categories of individuals. This could allow for continued coverage in the home State, even for periods of work in another State exceeding 36 months, in exceptional circumstances.
Specific provisions are available for mariners, aircraft crew, government employees and armed forces.