仕事用の鞄はそのまんま、work bag です。
仕事用の鞄が欲しいのですが・・・と店員に言いたいときは、
I'm looking for a work bag for women.
といったように、最後に for women を付ければ女性用、for men なら男性用という意味になります。
ちなみに、仕事用のスーツだと work suit です。
ぜひ使ってみてください。
I'm looking for a backpack I can use to go to work
In the UK as in every country, there is a wide of variety of bags for numerous purposes, so it is always necessary to state the type of bag you are referring to - unless, of course, you are standing in front of a specific type of bag and so the context makes it clear. If you just say 'bag' it could even include a disposable plastic bag - so that one word alone is not helpful! Additionally, it helps if you can mention the specific features you require.
"I'm looking for a leather handbag in black which is not too big and can be carried on the shoulder."
他の国と同様にイギリスにも、さまざまな目的の幅広い種類のバッグがあります。ですので、指しているバッグの種類を必ず言う必要があります。もちろん、特定の種類のバッグの前にいて、状況が明らかである場合は除きます。単純に'bag'と言うと、使い捨てのビニール袋さえも含まれますので、一語のみでは伝わりません！。さらに、必要とする機能について述べるとよいでしょう。
【例文】
"I'm looking for a leather handbag in black which is not too big and can be carried on the shoulder."（肩にかけられる大きすぎない黒い革のハンドバッグを探しています）
Looking' suggests that you are actively searching for something.
'Suitable' and 'can use for' explain that you are looking for something suited to a specific purpose, in this case it is work, which is why you end the sentence by mentioning it is for your work.
Looking という言葉を使うとあなたが能動的に何かを探していることを示唆します。
'Suitable' （適した）や 'can use for' （~に使うことが出来る）という言葉は何か特定の目的に適したものを探しているということを説明しています。この場合はそれが仕事なので、文章の終わりに for your work「仕事用に」と言っています。
I am looking for a bag that is a appropriate/suitable for work.
*I am looking for a bag that I can wear formal wear with.
Formal wear are clothes we wear for work. Therefore you would like a bag that you can use for work.
*I am looking for a bag that is a appropriate/suitable for work.
If something is appropriate for something, it means it is suitable.
For example: The dress she was wearing wasn't appropriate for work.
*I am looking for a bag that I can wear formal wear with.
Formal wearとは仕事に着ていく服なので、この例文は仕事で使えるバッグがほしいという意味です。
*I am looking for a bag that is a appropriate/suitable for work.
何かがappropriateだというのは、suitable（適している）という意味です。
【例文】
The dress she was wearing wasn't appropriate for work.（彼女の着ていたドレスは仕事に適していなかった）
The type of bag you would buy for work would depend on
your job.
An Office worker may require a small Ruck Sack, but a
Mechanic or Plumber may require a Tool Bag.
A secretary may just require something small like a Handbag,
but a teacher might use a Leather Satchel, a sturdy leather
bag with buckles and straps.
If you are in a store looking for a bag for a particular purpose you could ask the sales assistant to help you by letting her know the occasion you want the bag for. If you need a work bag you can use one of the sentences above.
Hope this helps
If you want to say that you are looking for a bag that you can use for work, you can say:
"I'm looking for a work bag."
"I'm looking for a bag I can use for work."
「仕事で使えるかばんを探している」は次のように言えます。
"I'm looking for a work bag."（仕事用のかばんを探しています）
"I'm looking for a bag I can use for work."（仕事で使えるかばんを探しています）
日本 
イギリス 
南アフリカ 
