diff --git a/internal/verifier/compare.go b/internal/verifier/compare.go
index 2bc732e..aba799a 100644
--- a/internal/verifier/compare.go
+++ b/internal/verifier/compare.go
@@ -3,9 +3,11 @@ package verifier
 import (
 	"bytes"
 	"context"
+	"fmt"
 	"time"
 
 	"github.com/10gen/migration-verifier/contextplus"
+	"github.com/10gen/migration-verifier/internal/reportutils"
 	"github.com/10gen/migration-verifier/internal/retry"
 	"github.com/10gen/migration-verifier/internal/types"
 	"github.com/10gen/migration-verifier/internal/util"
@@ -19,6 +21,7 @@ const readTimeout = 10 * time.Minute
 
 func (verifier *Verifier) FetchAndCompareDocuments(
 	givenCtx context.Context,
+	workerNum int,
 	task *VerificationTask,
 ) (
 	[]VerificationResult,
@@ -61,6 +64,7 @@ func (verifier *Verifier) FetchAndCompareDocuments(
 				var err error
 				results, docCount, byteCount, err = verifier.compareDocsFromChannels(
 					ctx,
+					workerNum,
 					fi,
 					task,
 					srcChannel,
@@ -77,6 +81,7 @@ func (verifier *Verifier) FetchAndCompareDocuments(
 
 func (verifier *Verifier) compareDocsFromChannels(
 	ctx context.Context,
+	workerNum int,
 	fi *retry.FuncInfo,
 	task *VerificationTask,
 	srcChannel, dstChannel <-chan bson.Raw,
@@ -196,6 +201,13 @@ func (verifier *Verifier) compareDocsFromChannels(
 
 					srcDocCount++
 					srcByteCount += types.ByteCount(len(srcDoc))
+					verifier.workerTracker.SetDetail(
+						workerNum,
+						fmt.Sprintf(
+							"read %s documents",
+							reportutils.FmtReal(srcDocCount),
+						),
+					)
 				}
 
 				return nil
diff --git a/internal/verifier/compare_test.go b/internal/verifier/compare_test.go
index cd355e6..6dad6c0 100644
--- a/internal/verifier/compare_test.go
+++ b/internal/verifier/compare_test.go
@@ -58,6 +58,7 @@ func (s *IntegrationTestSuite) TestFetchAndCompareDocuments_Context() {
 		go func() {
 			_, _, _, err := verifier.FetchAndCompareDocuments(
 				cancelableCtx,
+				0,
 				&task,
 			)
 			if err != nil {
diff --git a/internal/verifier/migration_verifier.go b/internal/verifier/migration_verifier.go
index d48492d..72cc19b 100644
--- a/internal/verifier/migration_verifier.go
+++ b/internal/verifier/migration_verifier.go
@@ -640,6 +640,7 @@ func (verifier *Verifier) ProcessVerifyTask(ctx context.Context, workerNum int,
 			var curBytesCount types.ByteCount
 			curProblems, curDocsCount, curBytesCount, err = verifier.FetchAndCompareDocuments(
 				ctx,
+				workerNum,
 				&miniTask,
 			)
 
@@ -654,6 +655,7 @@ func (verifier *Verifier) ProcessVerifyTask(ctx context.Context, workerNum int,
 	} else {
 		problems, docsCount, bytesCount, err = verifier.FetchAndCompareDocuments(
 			ctx,
+			workerNum,
 			task,
 		)
 	}
diff --git a/internal/verifier/migration_verifier_bench_test.go b/internal/verifier/migration_verifier_bench_test.go
index 34b8b6e..6401751 100644
--- a/internal/verifier/migration_verifier_bench_test.go
+++ b/internal/verifier/migration_verifier_bench_test.go
@@ -83,7 +83,7 @@ func BenchmarkGeneric(t *testing.B) {
 		qfilter := QueryFilter{Namespace: namespace}
 		task := VerificationTask{QueryFilter: qfilter}
 		// TODO: is this safe?
-		mismatchedIds, docsCount, bytesCount, err := verifier.FetchAndCompareDocuments(context.Background(), &task)
+		mismatchedIds, docsCount, bytesCount, err := verifier.FetchAndCompareDocuments(context.Background(), 0, &task)
 		if err != nil {
 			t.Fatal(err)
 		}
diff --git a/internal/verifier/migration_verifier_test.go b/internal/verifier/migration_verifier_test.go
index 5b16162..571122f 100644
--- a/internal/verifier/migration_verifier_test.go
+++ b/internal/verifier/migration_verifier_test.go
@@ -100,7 +100,7 @@ func (suite *IntegrationTestSuite) TestVerifierFetchDocuments() {
 
 	// Test fetchDocuments without global filter.
 	verifier.globalFilter = nil
-	results, docCount, byteCount, err := verifier.FetchAndCompareDocuments(ctx, task)
+	results, docCount, byteCount, err := verifier.FetchAndCompareDocuments(ctx, 0, task)
 	suite.Require().NoError(err)
 	suite.Assert().EqualValues(2, docCount, "should find source docs")
 	suite.Assert().NotZero(byteCount, "should tally docs' size")
@@ -112,7 +112,7 @@ func (suite *IntegrationTestSuite) TestVerifierFetchDocuments() {
 	// Test fetchDocuments for ids with a global filter.
 
 	verifier.globalFilter = map[string]any{"num": map[string]any{"$lt": 100}}
-	results, docCount, byteCount, err = verifier.FetchAndCompareDocuments(ctx, task)
+	results, docCount, byteCount, err = verifier.FetchAndCompareDocuments(ctx, 0, task)
 	suite.Require().NoError(err)
 	suite.Assert().EqualValues(1, docCount, "should find source docs")
 	suite.Assert().NotZero(byteCount, "should tally docs' size")
@@ -129,7 +129,7 @@ func (suite *IntegrationTestSuite) TestVerifierFetchDocuments() {
 		Ns: &partitions.Namespace{DB: "keyhole", Coll: "dealers"},
 	}
 	verifier.globalFilter = map[string]any{"num": map[string]any{"$lt": 100}}
-	results, docCount, byteCount, err = verifier.FetchAndCompareDocuments(ctx, task)
+	results, docCount, byteCount, err = verifier.FetchAndCompareDocuments(ctx, 0, task)
 	suite.Require().NoError(err)
 	suite.Assert().EqualValues(1, docCount, "should find source docs")
 	suite.Assert().NotZero(byteCount, "should tally docs' size")
@@ -655,6 +655,7 @@ func TestVerifierCompareDocs(t *testing.T) {
 
 						results, docCount, byteCount, err = verifier.compareDocsFromChannels(
 							ctx,
+							0,
 							fi,
 							&fauxTask,
 							srcChannel,
diff --git a/internal/verifier/summary.go b/internal/verifier/summary.go
index c578c35..440d413 100644
--- a/internal/verifier/summary.go
+++ b/internal/verifier/summary.go
@@ -483,7 +483,7 @@ func (verifier *Verifier) printChangeEventStatistics(builder *strings.Builder, n
 func (verifier *Verifier) printWorkerStatus(builder *strings.Builder, now time.Time) {
 
 	table := tablewriter.NewWriter(builder)
-	table.SetHeader([]string{"Thread #", "Namespace", "Task", "Time Elapsed"})
+	table.SetHeader([]string{"Thread #", "Namespace", "Task", "Time Elapsed", "Detail"})
 
 	wsmap := verifier.workerTracker.Load()
 
@@ -512,6 +512,7 @@ func (verifier *Verifier) printWorkerStatus(builder *strings.Builder, now time.T
 				wsmap[w].Namespace,
 				taskIdStr,
 				reportutils.DurationToHMS(now.Sub(wsmap[w].StartTime)),
+				wsmap[w].Detail,
 			},
 		)
 	}
diff --git a/internal/verifier/worker_tracker.go b/internal/verifier/worker_tracker.go
index 116f8d8..9b5f582 100644
--- a/internal/verifier/worker_tracker.go
+++ b/internal/verifier/worker_tracker.go
@@ -24,6 +24,7 @@ type WorkerStatus struct {
 	TaskType  verificationTaskType
 	Namespace string
 	StartTime time.Time
+	Detail    string
 }
 
 // NewWorkerTracker creates and returns a WorkerTracker.
@@ -51,6 +52,16 @@ func (wt *WorkerTracker) Set(workerNum int, task VerificationTask) {
 	})
 }
 
+func (wt *WorkerTracker) SetDetail(workerNum int, detail string) {
+	wt.guard.Store(func(m WorkerStatusMap) WorkerStatusMap {
+		status := m[workerNum]
+		status.Detail = detail
+		m[workerNum] = status
+
+		return m
+	})
+}
+
 // Unset tells the WorkerTracker that the worker is now inactive.
 func (wt *WorkerTracker) Unset(workerNum int) {
 	wt.guard.Store(func(m WorkerStatusMap) WorkerStatusMap {