legal or illegal resignation

gudday...ask ko lng po if legal or illegal po ang resignation kung ang company HR mismo ang gumawa ng letter of resignation for proper transfer of employee to other department in the same company with different HR?

on its face it is not illegal, but what may be illegal is that the employee may have been entitled to separation benefits from the first employer

ganito po yun, ang husband ko po ay regular land base employee inilipat po sya as sea base worker, ginawan sya ng hr ng resignation letter as land base para formally transfer to sea base. bago po nya pinirmahan ang letter tinanong po nya kung makakatanggap sya ng separation pay as regular employee at ang magiging status nya, ang sagot ng hr ay makaka avail po sya ng separation pay at makakasampa sya ng barko. pero until now po eh hindi pa sya nakapag work sa barko almost 1month na po. sa sitwasyon po nia ngaun ano po bha ang legal at nararapat niyang ma claim s company?legal din po bha na kasalukuyan syang nasa floating status eh wala naman syang alam na dahilan para hindi pa sya makapag umpisa as sea base employee. ano po ang dapat niyang gawing legal actions. sana po matulungan/mabigyan nyo kami ng advice.