5 sentences

1. 他的功劳很大。

   tā de gōng láo hěn dà.

   He deserves a great deal of credit.

   Source: Dong Chinese Dictionary

2. 经理亲自去慰劳前线的员工。

   jīng​lǐ qīn​zì qù wèi láo qián​xiàn de yuán​gōng.

   The manager went in person to express appreciation to the frontline employees.

   Source: Dong Chinese Dictionary

3. 劳您费心了。

   láo nín fèi​xīn le.

   Thank you for your trouble.

   Source: Dong Chinese Dictionary

4. 他整天都在为生活劳碌，很少有时间休息。

   tā zhěng​tiān dōu zài wèi shēng​huó láo lù, hěn shǎo yǒu shí​jiān xiū​xi.

   He toils all day to make a living and has very little time to rest.

   Source: Dong Chinese Dictionary

5. 他为了养家长期超负荷工作，终因积劳成疾而病倒了。

   tā wèi​le yǎng​jiā cháng​qī chāo​fù​hè gōng​zuò, zhōng yīn jī láo chéng​jí ér bìng​dǎo le.

   He worked excessive hours for a long time to support his family and finally fell ill due to overwork.

   Source: Dong Chinese Dictionary