Once a flexible working request has been agreed it forms a permanent change to your contract, unless agreed otherwise, and cannot be changed without further agreement between you and your manager.
Ar ôl cytuno i gais am drefniadau gweithio hyblyg, mae'n creu newid parhaol i'ch contract, oni bai y cytunir fel arall, ac ni fydd modd ei newid heb i chi a'ch rheolwr ddod i gytundeb pellach.