There are a couple of questions: legality & convenience, plus, perhaps, integrity and respect both of employer & employee.
According to EASA FTL's the operator & crew member is responsible to abide by the FTL regulations and to keep a record of their duties for 24 months. The operator will assign each crew member a home base; note it does not say employee, but crew member. If the operator requires the crew member to report for duty away from home base then it is classified as positioning, and as such is duty at the very least. If a positioning crew member is listed as crew then it is FDP.
The maximum duty is 60hrs in 7 consecutive days. Here is a simple question for those involved.
A crew member (let's say contractor) is home based at A. They are rostered to report for duty at B which is outside driving distance and requires air travel. During their 5 day duty they will accumulate 50 hours FDP. To position A-B requires 1 or 2 sectors of company a/c travel and a total >6 hours. It is rostered as Day Off. Then follows 5 flying days. Travel home B-A >6 hours is the next day. It is rostered s Day Off.
Do pilots consider this to be 7 days consecutive duty and > 60hours? If they are rostered in such a way what is their reaction? Or do they have a different opinion? Or are their travelling days now rostered as duty days? Pray tell.