ご多忙中[gotabouchuu] in the midst of your work (often used as a formal phrase in business letters, etc.)
多忙[tabou] busy
忙がしい[sewashii] busy
繁忙[hanbou] pressure of business
忙殺[bousatsu] being extremely busy

忙しげ[sewashige] looking busy
気忙しい[kizewashii] restless
忙中[bouchuu] (in the midst of) busyness
心忙しい[kokorozewashii] restless
仕事で忙しい[shigotodeisogashii] busy with one's work

汚職[oshoku] corruption
下級職[kakyuushoku] subordinate post
下職[shitashoku] subcontractor
家職[kashoku] one's trade or profession
解職[kaishoku] discharge

官職[kanshoku] government service
管理職[kanrishoku] management
閑職[kanshoku] leisurely post
休職[kyuushoku] temporary retirement
求職[kyuushoku] job hunting