We only know the occupation of about half of the apostles. Of those what was the most common occupation.

Of the apostles four were Fishermen. Peter and Andrew. Also James and John. Matthew was a tax collector also Simon the Zealot was a political activist.

Source:

Matthew 4:18-22 and others

He payed a small but important part in the book of Acts.  What job did Julius have?

Julius was a Centurion in the Roman army. He commanded the guard that brought Paul to Rome.

Source:

Acts 27:1

Lydia was the first convert in Philippi . What did she do for a living?

Lydia sold either purple dye or purple cloth. Both were very expensive and used in clothing for the nobility and royalty.

Source:

Acts 16:14

People from all walks of life heard the Gospel and believed. What job did Sergius Paulus have when he head the Gospel from Paul?

Sergius Paulus was the Governor or Proconsul of Cyprus. According to historical sources he was also a senator of Rome.

Source:

Acts 13:6-12

Dorcas was a seamstress, well known for making garments for the poor.

Source:

Acts 9:36-43

Aquila a minister who worked with Paul had a trade to support his family. What was that trade?