The information was gathered following a survey of the 158 Dáil representatives.
Four midlands TDs are among those who have a second job or income outside of the Dáil.
Laois TD and Justice Minister Charlie Flanagan, along with Longford-Westmeath deputies Robert Troy, Kevin 'Boxer' Moran and Willie Penrose, all responded to a survey of the 158 Dáil reps.
Minister Flanagan has a second income as a landlord, Fianna Fail's Robert Troy is also a postmaster and landlord, Labour TD Willie Penrose is a barrister, while OPW Minister Kevin Boxer Moran is Managing Director of a taxi company in Athlone.
The Irish Independent reports that less than half of TDs responded to their questions.
The issue of double jobbing is being discussed after it came to light ex Fine Gael deputy Dara Murphy claimed his full expenses, while also working in another job for the EU in Brussels.
Offaly Community Organisations Awarded BnM Funding
Former Army Ranger Praises Public Defence Forces Training
RNLI Christmas Pop Up Shop Takes Place This Weekend
Midlands Prison Ranks Top Two For Serious Complaints
High Court Quashes Lissywollen Ministerial Order
Solicitor For Westmeath Family Says High Court Action Added To Trauma
Father Who Raped And Threatened To Kill Daughter Jailed For 12 years
Country Music Night To Take Place In Laois
Offaly Driving Instructor Criticises New Learner Driver Rules
Offaly Community Groups Receive Over €164k In Funding From Bord na Móna
Mental Health Charity Highlight Tips For Stress Awareness Week
Family Of Joe Drennan Express Relief At Extended Sentence For His Killer
Midlands MEP Urges Tougher Stance On EU Nitrates Deal
Midlands Prisons Linked To One In Three Inmate Deaths
Laois Councillor Calls For Livestreaming Of Meetings
Two Men Charged After Cross Border Terrorism Investigation In Laois
Sentence Increased For Driver Who Killed Laois Student In Hit And Run
HSE Warns Poultry Farmers To Get Flu Shot Amid Bird Flu Cases
Westmeath Farmers Encouraged To Attend Election Debate