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Update to persistence of labour innovations #316

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justin-ven merged 1 commit into from
Jan 27, 2026
+14 −14
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Update to persistence of labour innovations #316

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28 changes: 14 additions & 14 deletions src/main/java/simpaths/model/BenefitUnit.java
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Original file line number Diff line number Diff line change
Expand Up @@ -986,16 +986,17 @@ protected void updateLabourSupplyAndIncome() {
LinkedHashSet<MultiKey<Labour>> possibleLabourCombinations = findPossibleLabourCombinations(); // Find possible labour combinations for this benefit unit
MultiKeyMap<Labour, Double> labourSupplyUtilityRegressionScoresByLabourPairs = MultiKeyMap.multiKeyMap(new LinkedMap<>());

//Sometimes one of the occupants of the couple will be retired (or even under the age to work, which is currently the age to leave home). For this case, the person (not at risk of work)'s labour supply will always be zero, while the other person at risk of work has a choice over the single person Labour Supply set.
// Sometimes one of the occupants of the couple will be retired (or even under the age to work, which is currently the age to leave home).
// For this case, the person (not at risk of work)'s labour supply will always be zero, while the other person at risk of work has a choice over the single person Labour Supply set.
if (Occupancy.Couple.equals(occupancy)) {

for (MultiKey<? extends Labour> labourKey : possibleLabourCombinations) { //PB: for each possible discrete number of hours

//Sets values for regression score calculation
// Sets values for regression score calculation
male.setLabourSupplyWeekly(labourKey.getKey(0));
female.setLabourSupplyWeekly(labourKey.getKey(1));

//Earnings are composed of the labour income and non-benefit non-employment income Yptciihs_dv() (this is monthly, so no need to multiply by WEEKS_PER_MONTH_RATIO)
// Earnings are composed of the labour income and non-benefit non-employment income Yptciihs_dv() (this is monthly, so no need to multiply by WEEKS_PER_MONTH_RATIO)
double maleIncome = Parameters.WEEKS_PER_MONTH * male.getEarningsWeekly() + Math.sinh(male.getyMiscPersGrossMonth());
double femaleIncome = Parameters.WEEKS_PER_MONTH * female.getEarningsWeekly() + Math.sinh(female.getyMiscPersGrossMonth());
double originalIncomePerMonth = maleIncome + femaleIncome;
Expand All @@ -1009,7 +1010,7 @@ protected void updateLabourSupplyAndIncome() {
setReceivedUC(evaluatedTransfers.getReceivedUC());
setReceivedLegacyBenefits(evaluatedTransfers.getReceivedLegacyBenefit());

//Note that only benefitUnits at risk of work are considered, so at least one partner is at risk of work
// Note that only benefitUnits at risk of work are considered, so at least one partner is at risk of work
double regressionScore = 0.;
if (male.atRiskOfWork()) { //If male has flexible labour supply
if (female.atRiskOfWork()) { //And female has flexible labour supply
Expand Down Expand Up @@ -1116,20 +1117,19 @@ protected void updateLabourSupplyAndIncome() {
double labourInnov = 0;

// Check if:
// - single occupant is employed
// - or male of couple is employed
// - or male is not at risk of work and female is employed
// -> then persist employment at prob_{persist_employment}
// - single occupant who was employed in preceding period
// - or male of couple who was employed in preceding period
// - or male is not at risk of work and female who was employed in preceding period
// -> then persist employment innovation with probability Parameters.labour_innovation_employment_persistence_probability
// Otherwise
// -> persist unemployment at prob_{persist_unemployment}

if (occupancy.Single_Male.equals(occupancy) && male.atRiskOfWork() && male.getEmployed() == 1) {
// -> persist employment innovation with probability Parameters.labour_innovation_notinemployment_persistence_probability
if (occupancy.Single_Male.equals(occupancy) && male.atRiskOfWork() && male.getEmployed_Lag1() == 1) {
labourInnov = getLabourInnovation(Parameters.labour_innovation_employment_persistence_probability);
} else if (occupancy.Single_Female.equals(occupancy) && female.atRiskOfWork() && female.getEmployed() == 1) {
} else if (occupancy.Single_Female.equals(occupancy) && female.atRiskOfWork() && female.getEmployed_Lag1() == 1) {
labourInnov = getLabourInnovation(Parameters.labour_innovation_employment_persistence_probability);
} else if (occupancy.equals(Occupancy.Couple) &&
((male.atRiskOfWork() && male.getEmployed() == 1) ||
(!male.atRiskOfWork() && female.atRiskOfWork() && female.getEmployed() == 1))) {
((male.atRiskOfWork() && male.getEmployed_Lag1() == 1) ||
(!male.atRiskOfWork() && female.atRiskOfWork() && female.getEmployed_Lag1() == 1))) {
labourInnov = getLabourInnovation(Parameters.labour_innovation_employment_persistence_probability);
} else {
labourInnov = getLabourInnovation(Parameters.labour_innovation_notinemployment_persistence_probability);
Expand Down