Original tense                    Reported
He said he worked in a shop	I work in a shop	Present simple
He said he was working in a shop	I am working in a shop	Present continuous
He said he had  worked in a shop	I have worked in a shop	Present  perfect
He said he had been  working in a shop	I have been working in a shop	Present perfect continuous
He said he had worked in a shop	I worked in a shop	Past simple
He said he had been working in a shop	I was working in a shop	Past continuous
He said he would work in a shop	I will work in a shop	Will
He said he was going to work in a shop	I am going to work in a shop	Be going to