kinmuzikan ha mizikai to itte mo, gyoumu ha muzukasii.

In this sentence, といっても means something like:

• even though ...
• although ...
• that said, ...
• even if you say that ...

So:

勤務時間は短いといっても、業務は難しい。
= Even though the working hours are short, the duties are difficult.

This pattern is often used when the speaker wants to acknowledge one fact but then add an important limitation or contrast.

A rough structure is:

X といっても、Y
= Even though X, Y
= You may say X, but Y

Because と usually attaches to the plain form of what comes before it.

So:

• 短い → plain present form of an い-adjective
• then といっても

This is very common in Japanese grammar. Different word types use their plain forms before と:

• い-adjective: 短い
• な-adjective: 静かだ
• noun: 学生だ
• verb: 行く

Examples:

• 安いといっても、買えない。
  Even though it’s cheap, I can’t buy it.
• 便利だといっても、完璧ではない。
  Even though it’s convenient, it’s not perfect.

So 短いといっても is grammatically normal.

Because the sentence is contrasting two different topics:

• 勤務時間は → as for working hours
• 業務は → as for the duties/work tasks

This gives a contrastive feel:

• The hours are short,
• but the work itself is difficult.

Using は twice is very common when comparing or contrasting aspects of something.

If you tried to translate the nuance naturally, it is close to:

The working hours may be short, but the work is difficult.

So the repeated は helps highlight that contrast.

勤務時間（きんむじかん） means working hours, hours on duty, or scheduled work hours.

Nuance-wise:

• 勤務時間: the hours you are expected to work at your job; somewhat formal
• 労働時間: labor hours / work hours; often used in legal, HR, or formal contexts
• 仕事の時間: more casual and less technical; just time for work

In this sentence, 勤務時間 sounds natural because the sentence has a somewhat formal tone, especially with 業務.

Both can relate to work, but the nuance is different.

• 仕事 = work, job, task; broad and very common
• 業務 = duties, business operations, professional tasks; more formal and specific

So:

• 仕事は難しい = the work is difficult
• 業務は難しい = the job duties / work responsibilities are difficult

In your sentence, 業務 makes it sound more formal, like talking about the actual professional tasks involved in the job.

Both are possible, but hiragana is very common here.

Reasons:

1. Grammar-heavy expressions are often written partly in hiragana.
   In a set phrase like といっても, many writers choose hiragana because the expression functions almost like a grammatical chunk.

2. It can feel lighter and easier to read.
   と言っても and といっても both appear in real Japanese.

So these are both possible:

• 短いといっても
• 短いと言っても

The meaning is the same here.

Yes. It literally comes from 言う (to say).

Breakdown:

• と = quotation particle
• いって = te-form of 言う
• も = even / even if / although

So at a very literal level, it is something like:

Even if you say that ...

But in many sentences, it no longer feels like someone is literally saying something out loud. It works more like a set expression meaning:

• although
• even though
• that said

So in this sentence, don’t over-translate the say part.

Yes, but the nuance would change.

For example:

• 勤務時間は短いけど、業務は難しい。
• 勤務時間は短いが、業務は難しい。

These mean roughly:

The working hours are short, but the duties are difficult.

However, といっても adds a slightly different feeling:

• it acknowledges short working hours as a positive or important fact,
• but then says that alone does not mean the job is easy.

So といっても can feel like:

Even though the hours are short, that doesn’t mean the work is easy.

That nuance is stronger than a simple but.

The も adds the sense of even.

Compare the feeling:

• といって by itself would just be saying that / even if saying that
• といっても gives the stronger concessive meaning:
  even if you say that / even though that is true

So the も helps create the idea:

Even granting that point, the following statement still holds.

That is why といっても is a fixed and common expression.

Yes, that is the natural implication.

The sentence suggests something like:

• Yes, the working hours are short
• but don’t assume that makes the job easy or comfortable
• because the actual duties are difficult

So there is an implied correction of an expectation:

Short hours might sound appealing, but the work itself is hard.

That contrast is an important part of the sentence’s nuance.

Very natural.

The comma helps separate:

• the concessive part: 勤務時間は短いといっても
• the main statement: 業務は難しい

Japanese commas are often used more flexibly than English commas, but here it makes the sentence easier to read and clearly marks the contrast.

Without the comma, the sentence is still understandable:

勤務時間は短いといっても業務は難しい。

But the comma is stylistically helpful and very normal.

A more casual version could be:

• 勤務時間は短いっていっても、仕事は難しい。
• 勤務時間は短いけど、仕事は難しい。

Changes:

• っていっても is a more casual spoken version of といっても
• 仕事 is less formal than 業務

So the original sentence sounds somewhat formal or written, while these alternatives sound more conversational.

The reading is:

きんむじかん は みじかい と いって も、ぎょうむ は むずかしい。

Word by word:

• 勤務時間 → きんむじかん
• 短い → みじかい
• 業務 → ぎょうむ
• 難しい → むずかしい