The phrase "a compulsory basis" is correct and usable in written English.
It can be used when referring to something that is required or mandatory as a foundation or starting point for an action or decision.
Example: "The training will be conducted on a compulsory basis for all new employees to ensure they understand company policies."
Alternatives: "a mandatory basis" or "an obligatory basis".
After 1920, social insurance on a compulsory basis was rapidly adopted throughout Europe and in the Western Hemisphere.
In 1966, he became involved in the Language Freedom Movement, which sought to put the teaching of Gaelic on a voluntary, rather than a compulsory, basis.
He also says the ABS does not have the authority to collect peoples' names in the 2016 census on a compulsory basis, despite what it has been telling the public.
JD 3.40pm: More club ownership news: Carson Yeung has now effectively completed a takeover of Birmingham City after his company Grandtop Holdings announced they had acquired over 90% of shares in the club and can now purchase the remainder on a compulsory basis.
In many countries, collection of fallen stock was voluntary or had been only recently organised on a compulsory basis.
Cancer cases from hospitals of at least 50 beds have notified and forwarded to National Department of Health on a compulsory basis.
The response across social media and online to the news of these measures has been less than positive and so, as long as the Met's extension of this scheme continues on a voluntary rather than compulsory basis, we all face the choice of what makes us comfortable and what we deem to be too invasive and the venues that we attend can continue to be shaped accordingly.
Monasteries, the primary source of poor relief, were dissolved by the Tudors Reformation causing poor relief to move from a largely voluntary basis to a compulsory tax that was collected at a parish level.
During 1998 1999 a live attenuated gE-deleted marker vaccine provided the basis for a compulsory control programme in the Netherlands.
The waiver allowed a country to issue a compulsory license for either domestic use or export, on the basis of public health need [ 11].
The implicit assumption behind the need for a compulsory regime is that otherwise people would not save enough if the decision is left only on a voluntary basis.
