I don't think this is entirely correct.. the resident visa and work visa are issued and have an expiry date, the DGCA validation is only valid until the most restrictive item, licence, work permit, or resident visa.
When we go through the airport for any International flight we show our resident visa, which has the work permit date endorsed on it.
If these guys did not use it for 30 days, no-one will no, but more importantly, it means they did not fly any international flights for 30 days, which is not possible..
The resident visa is collected the same day at the Central Police Station, in person, so it can only be the " work permission" that the Company did not apply for..
The guy that was on 90 days notice was technically still working fro his previous employer, so that would mean his new " start date" would be after the end of the 90 days.
However, having said all this, the majority of non-Turkish FOs will not get extensions to the contracts, but Capatins they are happy to keep... the good ones that is..of course it takes a while to sort out the "dodgy" Captains ..