Chapter 4 of the Joint Travel Regulations (JTR), titled “Government Funded Leave,” establishes the comprehensive policies and standard transportation allowances for various official leave programs provided to Service members, civilian employees, and their dependents. The chapter mandates that travelers must use Government transportation when it is reasonably available and explicitly limits reimbursable expenses by prohibiting the payment of per diem or meal tickets during these trips. It provides detailed eligibility criteria and authorized routing rules for Emergency Leave for military personnel, primarily supporting those stationed Outside the Continental United States (OCONUS) who are facing personal emergencies. Furthermore, the regulation outlines Emergency Visitation Travel (EVT) for civilian employees and their dependents residing at foreign duty stations, authorizing critical transportation for severe medical emergencies, eldercare, the death of an immediate family member, unusual personal hardships, or the birth of a new child. Volume 4 also governs vital morale-boosting travel programs, detailing the frequency and approved destinations for Funded Environmental and Morale Leave (FEML) for personnel serving 24-month or longer tours at designated austere locations. Additionally, it outlines Rest and Recuperation (R&R) Leave allowances for personnel assigned to 12-month OCONUS tours or deployed to contingency operations such as Iraq, Afghanistan, or Pakistan. Finally, the chapter defines a Special Leave Transportation Allowance that reimburses eligible unaccompanied military and Coast Guard members stationed in Alaska for roundtrip airfare to their Home of Record or permanent legal residence.

Chapter 3, Part E of the Joint Travel Regulations (JTR), titled “Leave in Conjunction with TDY,” establishes the rules and financial limitations for combining personal leave with official Temporary Duty (TDY) travel. The regulation permits travelers to combine leave with official travel provided it incurs no additional cost to the Government, with reimbursement strictly capped at the constructed cost of the official travel had no personal leave occurred. It outlines specific allowances for complex scenarios, such as receiving TDY orders while already on leave, interrupting leave for official duties, or being recalled from leave due to operational emergencies. The chapter dictates the effect of leave on per diem, stipulating that Service members receive no per diem for days in a leave status, while detailing specific per diem computation rules for civilian employees taking leave around non-workdays. Furthermore, it provides comprehensive procedures for handling personal emergencies while on TDY, authorizing limited travel and transportation allowances for personnel who must interrupt their mission to return home or travel to an alternate emergency location. Finally, the regulation governs specialized administrative situations, including calculating daily rates for long-term lodging when leave is taken, reimbursing members whose ship relocates during an authorized absence, and covering retained TDY lodging expenses for Service members who take leave to visit evacuated dependents at a safe haven.

Chapter 3, Part D of the Joint Travel Regulations (JTR) establishes the comprehensive policies and allowances for medical-related travel for Service members, civilian employees, and their dependents. It outlines the parameters for standard travel and transportation reimbursements across a variety of medical scenarios, including emergency travel due to incapacitating illness or injury, outpatient treatment, convalescent leave, transfers between medical facilities, periodic physical examinations for those on the Temporary Disability Retired List (TDRL), and access to non-covered Assisted Reproductive Technology (ART). The chapter provides specialized guidance for personnel stationed Outside the Continental United States (OCONUS), authorizing travel to the nearest capable medical or dental facility when adequate care is unavailable locally. Furthermore, it details the specific per diem and transportation allowances for medically necessary attendants and escorts accompanying patients who are physically incapable of traveling alone. Finally, the regulation governs the compassionate travel of up to three designated family members or a non-medical attendant to visit a seriously wounded, ill, or injured Service member or civilian employee, ensuring their transportation and limited per diem are covered to support the patient's health, welfare, and recovery

Air National Guard Instruction (ANGI) 65-101, titled “Air National Guard (ANG) Workday Accounting and Reporting Procedures,” establishes the comprehensive financial management policies for administering the base-level workday program. The instruction defines the specific roles and responsibilities of key personnel, including the Adjutant General, Wing/Base Commanders, Comptrollers, and Unit Resource Advisors, in managing and overseeing workdays and funding allocations. It mandates the use of the Air National Guard Reserve Order Writing System (AROWS) and the Defense MilPay Office (WebDMO) for creating, tracking, and certifying military pay transactions, which are electronically transmitted to the Defense Finance and Accounting Service (DFAS) for payment. The regulation provides detailed processing procedures for both inactive duty (such as Regularly Scheduled Drills and Readiness Management Periods) and active duty (including short tours, long tours, pre-certified tours, and Basic Military Training). Furthermore, ANGI 65-101 dictates strict internal controls to prevent the mismanagement of funds by outlining acceptable signature methods (both wet and electronic), enforcing the mandatory separation of duties among document preparers, approvers, and certifiers, and defining the strict workday accounting stages of allocated, committed, and obligated funds.

Chapter 3, Part C of the Joint Travel Regulations (JTR), titled “Deployments, Exercises, Maneuvers, War Games, and Contingency Operations,” establishes the comprehensive travel and transportation allowances for personnel participating in readiness and operational missions. Generally, military members and civilian employees involved in these activities are placed in a field duty or group travel status, meaning per diem is typically not payable when adequate government lodging, meals, and incidentals are provided. However, advance and rear parties may receive standard travel allowances, and the Combatant Commander (CCDR) or Joint Task Force (JTF) Commander holds the authority to establish specific per diem rates, direct the use of no-cost government quarters, or mandate the Government Meal Rate (GMR) to ensure equitable reimbursement across an Area of Responsibility (AOR). The regulation outlines specialized rules for computing per diem during travel between locations within the same AOR and indefinitely waives the standard 180-day Temporary Duty (TDY) limit for civilian employees deployed to combat zones in support of ongoing contingency operations. Finally, it dictates the strict criteria under which deployed personnel may be reimbursed for retaining lodging during an authorized absence and governs the commercial storage of Household Goods (HHG) and Privately Owned Vehicles (POVs) for personnel assigned to contingency operations or temporary changes of station (TCS) for 31 or more days

Chapter 3, Part B of the Joint Travel Regulations (JTR), titled “Training Travel,” establishes the comprehensive guidelines and travel allowances for Department of Defense personnel attending instructional courses and educational events. The regulation dictates the critical temporal threshold for active-duty Service members, classifying courses with a scheduled duration of 139 or fewer days as Temporary Duty (TDY), while those lasting 140 or more days are designated as a Permanent Change of Station (PCS). It provides detailed allowance frameworks for diverse groups, including Reserve Component (RC) members attending Active Duty for Training (ADT) or Inactive Duty Training (IDT)—with specific compensation rules based on whether they commute daily or travel outside normal commuting distances. Additionally, the chapter outlines specialized travel rules for Service academy cadets, midshipmen, and SROTC members attending exams, advanced training, or remote duty. Furthermore, it governs allowances for training conferences and civilian employee training, detailing scenarios where civilians receive standard TDY allowances versus situations where the Authorizing Official determines it is more cost-effective to authorize dependent and Household Goods (HHG) transportation for training outside the Permanent Duty Station (PDS) area.

Chapter 3, Part A of the Joint Travel Regulations (JTR), titled "TDY Travel - Business Travel," establishes the comprehensive policies and allowances for routine Temporary Duty (TDY) and other official business travel. The chapter defines eligibility and computational rules for common business activities, such as inspections, technical assistance, and conference attendance, emphasizing that travelers generally receive the standard transportation and per diem allowances found in Chapter 2,. It provides specialized guidance for Reserve Component (RC) members performing active duty with or without pay (including those who commute daily), retired Service members recalled to active duty, and individuals traveling under Invitational Travel Authorizations (ITAs),. Furthermore, Part A dictates the allowances for specific travel scenarios, including pre-employment interviews, participation in justice and criminal matters (such as witness testimony or travel associated with sexual assault), and travel related to Service academies or DoD Education Activity (DoDEA) activities,. Finally, the chapter governs unique TDY situations such as travel with a dignitary, indeterminate TDY (ITDY), repatriation of a Service member held captive, and the specific allowances provided to family members and escorts for travel in the event of a DoD traveler's death,

Chapter 2 of the Joint Travel Regulations (JTR), titled “Standard Travel and Transportation Allowances,” establishes the core framework for compensating travelers for normal expenses incurred while under official travel orders. The chapter details the three major categories of standard allowances: transportation, per diem, and miscellaneous reimbursable expenses. It prescribes the rules for selecting, authorizing, and reimbursing various transportation modes—including commercial air, rental vehicles, and privately owned vehicles (POVs)—while emphasizing the mandatory use of U.S. flag carriers and coach-class accommodations unless specific, documented exceptions apply. Furthermore, it provides comprehensive guidelines for calculating per diem allowances, which cover lodging, meals, and incidental expenses based on the authorized travel location, and sets strict requirements for utilizing available Government quarters or Integrated Lodging Program (ILP) facilities. The chapter also outlines the criteria for authorizing an Actual Expense Allowance (AEA) when standard per diem rates are insufficient, details a vast array of allowable miscellaneous expenses ranging from baggage fees to foreign currency conversion costs, and defines the parameters for authorized local travel in and around a traveler's Permanent Duty Station (PDS). Finally, it governs the specific eligibility requirements, weight limits, and temporary storage procedures for Household Goods (HHG) when a Service member or civilian employee is on a Temporary Duty (TDY) assignment