DearMrs.Zhang,
Iamsorryinformyouofmydecisiontoresignmycurrentpositionasassistantinthiscompany.
Ienjoyworkingwiththepeopleintheoffice,becausetheyarekindandhardworking.However,afteramonth'swork,Iunfortunatelyfindthejobisquitefarfrommyexpectations.Firstofall,Icouldhardlybeartheextraworkandnightshift.Meanwhile,thesalaryisfarfromsatisfyingwhichcannotsupportmylargefamily.Whatismore,Ifindmytalentsarenotbeingmadeuseof.
Iamsorryforanyinconveniencecaused,andIsincerelyhopethatyouapproveofmyresignation.
Yourssincerely,
LiMing