diff --git a/logging/logging.go b/logging/logging.go
index 6032c57..9420ca9 100644
--- a/logging/logging.go
+++ b/logging/logging.go
@@ -24,6 +24,7 @@ import (
 	"github.com/go-logr/logr"
 	"github.com/go-logr/zapr"
 	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
 
 	"github.com/crossplane/crossplane-runtime/pkg/logging"
 
@@ -44,12 +45,31 @@ func NewLogrLogger(l logr.Logger) Logger {
 }
 
 // NewLogger returns a new logger.
-func NewLogger(debug bool) (logging.Logger, error) {
-	o := []zap.Option{zap.AddCallerSkip(1)}
+func NewLogger(debug, timeEncodeISO8601 bool, addCallerSkip ...int) (Logger, error) {
+	// default value for caller skip
+	callerSkip := 1
+	if len(addCallerSkip) > 0 {
+		callerSkip = addCallerSkip[0]
+	}
+
+	o := []zap.Option{zap.AddCallerSkip(callerSkip)}
 	if debug {
 		zl, err := zap.NewDevelopment(o...)
 		return NewLogrLogger(zapr.NewLogger(zl)), errors.Wrap(err, "cannot create development zap logger")
 	}
+
+	// If timeEncodeISO8601 is true, use ISO8601TimeEncoder for production logger.
+	if timeEncodeISO8601 {
+		ec := zap.NewProductionEncoderConfig()
+		ec.EncodeTime = zapcore.ISO8601TimeEncoder
+
+		p := zap.NewProductionConfig()
+		p.EncoderConfig = ec
+		zl, err := p.Build(o...)
+		return NewLogrLogger(zapr.NewLogger(zl)), errors.Wrap(err, "cannot create production zap logger")
+	}
+
+	// If timeEncodeISO8601 is false, use the default EpochTimeEncoder for production logger.
 	zl, err := zap.NewProduction(o...)
 	return NewLogrLogger(zapr.NewLogger(zl)), errors.Wrap(err, "cannot create production zap logger")
 }
diff --git a/sdk.go b/sdk.go
index 5b4aadb..e1a7520 100644
--- a/sdk.go
+++ b/sdk.go
@@ -144,6 +144,6 @@ func Serve(fn v1beta1.FunctionRunnerServiceServer, o ...ServeOption) error {
 }
 
 // NewLogger returns a new logger.
-func NewLogger(debug bool) (logging.Logger, error) {
-	return logging.NewLogger(debug)
+func NewLogger(debug, timeEncodeISO8601 bool, addCallerSkip ...int) (logging.Logger, error) {
+	return logging.NewLogger(debug, timeEncodeISO8601, addCallerSkip...)
 }