diff --git a/shared/helpers/dayjs.ts b/shared/helpers/dayjs.ts
index 529f1ec953..484708bc60 100644
--- a/shared/helpers/dayjs.ts
+++ b/shared/helpers/dayjs.ts
@@ -24,6 +24,8 @@ dayjs.extend(advancedFormat)
 dayjs.extend(isYesterday)
 dayjs.extend(localizedFormat)
 
+dayjs.tz.setDefault("Europe/Paris")
+
 export type TDayjs = dayjs.Dayjs
 
 export default dayjs
diff --git a/shared/helpers/openapi/__snapshots__/generateOpenapi.test.ts.snap b/shared/helpers/openapi/__snapshots__/generateOpenapi.test.ts.snap
index fa0c3f2342..2f5c150a32 100644
--- a/shared/helpers/openapi/__snapshots__/generateOpenapi.test.ts.snap
+++ b/shared/helpers/openapi/__snapshots__/generateOpenapi.test.ts.snap
@@ -4502,6 +4502,7 @@ L'email est envoyé depuis l'adresse générique \\"Ne pas répondre\\" de La bo
                     "type": "string",
                   },
                   "phone": {
+                    "pattern": "^0[1-9]\\\\d{8}$",
                     "type": "string",
                   },
                 },
@@ -4509,6 +4510,7 @@ L'email est envoyé depuis l'adresse générique \\"Ne pas répondre\\" de La bo
                   "establishment_siret",
                   "first_name",
                   "last_name",
+                  "phone",
                   "email",
                 ],
                 "type": "object",
diff --git a/shared/models/job.model.test.ts b/shared/models/job.model.test.ts
new file mode 100644
index 0000000000..3aae4c84ab
--- /dev/null
+++ b/shared/models/job.model.test.ts
@@ -0,0 +1,53 @@
+import dayjs from "dayjs"
+import { describe, expect, it } from "vitest"
+
+import { ZJobStartDateCreate } from "."
+
+describe("job.model", () => {
+  describe("job_start_date field", () => {
+    describe("during the day", () => {
+      const zJobStartDate = ZJobStartDateCreate(dayjs("2023-11-21T15:22:21.515+0100"))
+      it("should pass", () => {
+        expect(zJobStartDate.safeParse("2023-11-21").success).toBe(true)
+        expect(zJobStartDate.safeParse("2023-11-22").success).toBe(true)
+      })
+      it("should fail", () => {
+        expect(zJobStartDate.safeParse("2023-11-19").success).toBe(false)
+        expect(zJobStartDate.safeParse("2023-11-20").success).toBe(false)
+      })
+    })
+    describe("at midnight in Paris", () => {
+      const zJobStartDate = ZJobStartDateCreate(dayjs("2023-11-21T00:00:00.000+0100"))
+      it("should pass", () => {
+        expect(zJobStartDate.safeParse("2023-11-21").success).toBe(true)
+        expect(zJobStartDate.safeParse("2023-11-22").success).toBe(true)
+      })
+      it("should fail", () => {
+        expect(zJobStartDate.safeParse("2023-11-19").success).toBe(false)
+        expect(zJobStartDate.safeParse("2023-11-20").success).toBe(false)
+      })
+    })
+    describe("at 1am Paris", () => {
+      const zJobStartDate = ZJobStartDateCreate(dayjs("2023-11-21T01:00:00.000+0100"))
+      it("should pass", () => {
+        expect(zJobStartDate.safeParse("2023-11-21").success).toBe(true)
+        expect(zJobStartDate.safeParse("2023-11-22").success).toBe(true)
+      })
+      it("should fail", () => {
+        expect(zJobStartDate.safeParse("2023-11-19").success).toBe(false)
+        expect(zJobStartDate.safeParse("2023-11-20").success).toBe(false)
+      })
+    })
+    describe("at 23pm Paris", () => {
+      const zJobStartDate = ZJobStartDateCreate(dayjs("2023-11-21T23:00:00.000+0100"))
+      it("should pass", () => {
+        expect(zJobStartDate.safeParse("2023-11-21").success).toBe(true)
+        expect(zJobStartDate.safeParse("2023-11-22").success).toBe(true)
+      })
+      it("should fail", () => {
+        expect(zJobStartDate.safeParse("2023-11-19").success).toBe(false)
+        expect(zJobStartDate.safeParse("2023-11-20").success).toBe(false)
+      })
+    })
+  })
+})
diff --git a/shared/models/job.model.ts b/shared/models/job.model.ts
index 593cdd1f3e..55115e28e9 100644
--- a/shared/models/job.model.ts
+++ b/shared/models/job.model.ts
@@ -75,6 +75,12 @@ export const ZJob = ZJobFields.extend({
   .strict()
   .openapi("Job")
 
+export const ZJobStartDateCreate = (now: dayjs.Dayjs = dayjs.tz()) =>
+  // Le changement de jour se fait à minuit (heure de Paris)
+  ZJobFields.shape.job_start_date.refine((date) => dayjs.tz(date).isSameOrAfter(dayjs.tz(now).startOf("days")), {
+    message: "job_start_date must be greater or equal to today's date",
+  })
+
 export const ZJobWrite = ZJobFields.pick({
   rome_appellation_label: true,
   rome_code: true,
@@ -89,9 +95,7 @@ export const ZJobWrite = ZJobFields.pick({
   delegations: true,
 })
   .extend({
-    job_start_date: ZJobFields.shape.job_start_date.refine((date) => dayjs(date).isSameOrAfter(dayjs().utc().startOf("days")), {
-      message: "job_start_date must be greater or equal to today's date",
-    }),
+    job_start_date: ZJobStartDateCreate(),
   })
   .strict()
   .openapi("JobWrite")
diff --git a/shared/routes/v1Jobs.routes.ts b/shared/routes/v1Jobs.routes.ts
index a895968505..896b17e628 100644
--- a/shared/routes/v1Jobs.routes.ts
+++ b/shared/routes/v1Jobs.routes.ts
@@ -1,7 +1,6 @@
-import dayjs from "../helpers/dayjs"
 import { extensions } from "../helpers/zodHelpers/zodPrimitives"
 import { z } from "../helpers/zodWithOpenApi"
-import { ZJob, ZJobFields } from "../models"
+import { ZJob, ZJobFields, ZJobStartDateCreate } from "../models"
 import { zObjectId } from "../models/common"
 import { ZApiError, ZLbacError, ZLbarError } from "../models/lbacError.model"
 import { ZLbaItemLbaCompany, ZLbaItemLbaJob, ZLbaItemPeJob } from "../models/lbaItem.model"
@@ -381,9 +380,7 @@ export const zV1JobsRoutes = {
         custom_geo_coordinates: true,
       })
         .extend({
-          job_start_date: ZJobFields.shape.job_start_date.refine((date) => dayjs(date).isSameOrAfter(dayjs().utc()), {
-            message: "job_start_date must be greater or equal to today's date",
-          }),
+          job_start_date: ZJobStartDateCreate(),
           appellation_code: z.string().regex(/^[0-9]+$/, "appelation code must contains only numbers"),
         })
         .strict()