3 sentences

1. 请向工作人员寻求帮助。

   qǐng xiàng gōng​zuò​rén​yuán xún​qiú bāng​zhù.

   Please ask the staff for help.

   Source: Dong Chinese Dictionary

2. 爆炸后，有40名工作人员下落不明。

   bào​zhà hòu, yǒu40 míng gōng​zuò​rén​yuán xià​luò​bù​míng.

   There were 40 staff members unaccounted for after the explosion.

   Source: OpenSubtitles

3. 他穿上一套西装，假装成工作人员混进了后台。

   tā chuān​shang yī tào xī​zhuāng, jiǎ​zhuāng chéng gōng​zuò​rén​yuán hùn​jìn le hòu​tái.

   He put on a suit and managed to sneak backstage by pretending to be a staff member.

   Source: Dong Chinese Dictionary