～一方で
on the one hand / while
～一方で comes from 一方, literally “one side”. It joins two clauses to present two coexisting sides of the same topic: “while on the one hand X, on the other hand Y”.
It is similar to ～反面, but while ～反面 always implies two opposite faces of one thing, ～一方で can also simply line up two parallel facts or activities side by side. It is common in written and somewhat formal Japanese.
1. Contrasting two sides of one thing
The clause before 一方で gives one aspect; the clause after gives a contrasting aspect that is true at the same time.
給料は安い一方で、楽だ。
“The pay is low, but on the other hand the work is easy.”
- 給料（きゅうりょう）= pay, salary
- は = topic marker
- 安い（やすい）= low, cheap
- 一方で（いっぽうで）= on the other hand, while
- 楽だ（らくだ）= is easy, comfortable
2. Two parallel activities
～一方で can also describe someone doing two different things in parallel, without a strong sense of opposition.
彼は会社で働く一方で、小説も書いている。
“While working at a company, he also writes novels.”
- 彼（かれ）= he
- 会社（かいしゃ）= company
- で = at (place of action)
- 働く一方で（はたらくいっぽうで）= while working
- 小説（しょうせつ）= novel
- も = also
- 書いている（かいている）= is writing
How to form it
Plain form + 一方で (na-adjectives take な, nouns take である)
- 安い（やすい）= cheap → 安い一方で（やすいいっぽうで）= while it is cheap
- 便利だ（べんりだ）= convenient → 便利な一方で（べんりないっぽうで）= while it is convenient
- 働く（はたらく）= to work → 働く一方で（はたらくいっぽうで）= while working
Key idea
～一方で holds up two sides of the same coin at once: both clauses are true at the same time, and the speaker wants you to see them together.
Built on the same stem
Updated .